Answer:
A 30 dogs and 48 cats
Step-by-step explanation:
The ratio of cats to dogs in the local shelter is 5 to 8, which means for every 5 cats, there are 8 dogs. If we assume that the total number of cats and dogs in the shelter is a multiple of the ratio, we can find the possible numbers of cats and dogs. In option A, the number of cats and dogs is 30 dogs and 48 cats which is a multiple of the ratio. 59 = 45 and 89 = 72 which is the closest to the number of cats and dogs in option A. Thus, option A shows the possible numbers of cats and dogs in the local shelter.
Which of the following best describes the graph below?
C: It is not a function.
It doesn't pass the vertical line test.
In an experiment, a scientist uses a test tube that has volume of 8.4 cm3. Find how many liters of water will completely fill the test tube.
The liters of water that will completely fill the test tube, can be found to be 0. 0084 liters.
How to find the liters of water ?Both cubic centimeters and liters can be used to describe the volume of an object in terms of the amount of fluid that can fill them up.
A liter can be converted to be 1, 000 cubic centimeters.
This means that if a test tube has a volume of 8. 4 cubic centimers, it can be filled up by:
= 8. 4 / 1, 000
= 0. 0084 liters of water
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In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally distributed with a mean of 53.6 inches, and standard deviation of 2.8 inches.
A) What is the probability that a randomly chosen child has a height of less than 49 inches? (Round to 3 decimal places.)
B) What is the probability that a randomly chosen child has a height of more than 48.8 inches? (Round to 3 decimal places.)
The likelihood that a randomly selected youngster is under 49 inches tall is 0.989
The likelihood that a randomly selected child would be taller than 48.8 inches is 0.875.
Let the X represent a ten-year-old child's height measurements.
As a result, with a mean of 56.2 inches and a standard deviation of 3.3 inches, X follows the normal distribution.
A) We need to calculate the likelihood that a youngster selected at random is under 63.75 inches tall.
Specifically,
P(X < 63.75)
The Z score calculation gives us
Z = (X - μ)/σ
where mean is and standard deviation is.
Z = (63.75 - 56.2)/3.3
Z = 2.288 as a result.
According to the z distribution table, the value is around 0.989
B) Similar to this, the Z score formula gives us
Z = (X - μ)/σ
where μ mean is and σ standard deviation is.
Therefore, we must determine the likelihood that a child picked at random will be taller than 60 inches.
Z = (60 - 56.2)/3.3
Z = 1.1515
The number is around 0.875 according to Z score.
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Match the Lines L1 (blue), L2 red) and L3 (green) with the slopes by placing the letter of the slopes next to each set listed below: 1. The slope of line LI 2. The slope of line L2 3. The slope of line L3 A) m =-l2 B) m = 1.2 C) m = 0
The slope of line L1 is obtained to be m = -1.7.
The slope of line L2 is obtained to be m = 1.
The slope of line L3 is obtained to be m = 0.
What is a slope?
A line's steepness and direction are measured by the line's slope. Without actually using a compass, determining the slope of lines in a coordinate plane can assist in forecasting whether the lines are parallel, perpendicular, or none at all.
The line L1 indicated with red colour moves from quadrant 2 to quadrant 4 which means the slope will be negative. It moves 1.7 unit down and 1.7 unit right.
The three options for slope is -
m = 0
m = 1
m = -1.7
Therefore, m = -1.7 is the slope for line L1.
The line L2 indicated with blue colour moves from quadrant 3 to quadrant 1 which means the slope will be positive. It moves 1 unit up and 1 unit right.
The three options for slope is -
m = 0
m = 1
m = -1.7
Therefore, m = 1 is the slope for line L2.
The line L3 indicated with green colour moves from quadrant 3 to quadrant 4 forming a straight horizontal line parallel to x-axis which means the slope will be zero. It moves 0 right.
Therefore, m = 0 is the slope for line L3.
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The student council of your high school wants to dress code for school dances. You conduct & survey regarding the have conduct a stratified advised them that it might be best to random sample of the student body. Which of the following is not a valid stratified design? Assume the results of the separate samples will combined into a single sample of the student body. Two simple random samples are to be conducted: one of the boys in the student body and the other of the girls in the student body. Four simple random samples are conducted: one in each of the four classes. Two simple random samples are conducted in randomly selected homerooms: one of the boys in the selected homerooms and the other of the girls in the selected homerooms. Two random samples are conducted: one of students whose GPA'$ are 2.5 or higher and the other of students whose GPA '$ are less than 2.5. None of these statements is
Two random samples are conducted: one of students whose GPA'$ are 2.5 or higher and the other of students whose GPA '$ are less than 2.5,it is not valid. because it have no criteria four dress code sample in students council .
The student council of your high school wants to dress code for school dances. You conduct & survey regarding the have conduct a stratified advised them that it might be best to random sample of the student body.
Assume the results of the separate samples will combined into a single sample of the student body.
Two simple random samples are to be conducted: one of the boys in the student body and the other of the girls in the student body. it is valid
Four simple random samples are conducted: one in each of the four classes. it is valid,
one of the boys in the selected homerooms and the other of the girls in the selected homerooms. it is valid,
Two random samples are conducted: one of students whose GPA'$ are 2.5 or higher and the other of students whose GPA '$ are less than 2.5,
it is not valid. because it have no criteria four dress code sample in students council.
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A neighbor charges $10 to mow your lawn plus $20 per hour. Write a function rule for the total cost of hiring your neighbor (y) for a certain amount of hours (x).
The value of function showing the total cost of hiring your neighbor (y) for a certain amount of hours (x) is,
⇒ y = 10 + 20x
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
We have to given that;
A neighbor charges $10 to mow your lawn plus $20 per hour.
Let the total cost of hiring your neighbor = y
And, Number of amount of hours = x
Hence, We can formulate;
The function which showing the total cost of hiring your neighbor (y) for a certain amount of hours (x) is,
⇒ y = 10 + 20x
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A 6-sided die is rolled 2 times. What is the probability of getting 1 both times? (Give your answer as a fraction in simplest form.
Answer: 3/4
Step-by-step explanation:why do u need explaination]
If X = 3 centimeters, Y = 4 centimeters, and Z = 7 centimeters, what is the area of the object?
Answer:
Step-by-step explanation:
multiply everything together as well as it also depends on whether or not it is a triangle or not. remember to use the pythogorean theorem a^2+b^2=c^2 if it is a triangle.
let be a subset of that is closed under multiplication (that is, if and are in , then so is ). let and be disjoint subsets of whose union is . given that the product of any three (not necessarily distinct) elements of is in and that the product of any three elements of is in , show that at least one of the two subsets , is closed under multiplication.
the product of any three (not necessarily distinct) elements of T is in T and that the product of any three elements of U is in U, show that at least one of the two subsets T, U is closed under multiplication.
Let S be a subset of R that is closed under multiplication (that is, if a and b are in S, then so is ab). Let Tand Ube disjoint subsets of S whose union is S .Given that the product of any three (not necessarily distinct) elements of T is in T and that the product of any three elements of U is in U, show that at least one of the two subsets T, U is closed under multiplication.
We start out with the assumption that neither T nor U is closed under multiplication and use proof by contradiction to prove that at least one of T or U must be closed under multiplication.
If t1, t2 ,t3 ∈T and u1 ,u2 , u3 ∈U, it is given by the problem that t1⋅t2⋅t3∈T
and u1⋅u2⋅u3∈U. Also, T and U are disjoint subsets of S and therefore, T∩U = ∅ Now let t3=u1⋅u2 and u3=t1⋅t2. These statements are valid because T and U are not closed under multiplication, so the product of u1⋅u2 must not be in the set U and the product of t1⋅t2 must not be in set T.
Then t1⋅t2⋅t3∈T is equivalent to t1⋅t2⋅u1⋅u2∈Tand u1⋅u2⋅u3∈U is equivalent to u1⋅u2⋅t1⋅t2∈U
However, this is a contradiction because these products both are the same —t1⋅t2⋅u1⋅u2— but T∩U= ∅ because Tand U are disjoint. Then the original assumption that "neither T nor U is closed under multiplication" must have been wrong, and at least one of T or U must be closed under multiplication.
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.
answer two questions about systems aaa and bbb: system aaa \text{\quad}start text, end text system bbb \begin{cases}8x-3y
By removing both of the equations in system A and by bringing the first equation of system A, we may create system B from system A.
Multiple equations are compiled into systems of equations.
5x+y=3
4x−7y=8
System B
5x+y=3
x+8y=−5
1) From System A, how do we go to System B?
CORRECT (SELECTED) (SELECTED)
Substitute the difference or sum of the two equations in one equation.
2) Are the systems equal in the light of the prior response? Do they share the same solution, in other words?
CORRECT (SELECTED) (SELECTED)
Yes
As a result, we can obtain system B from system A by Subtracting the solutions to the two equations in system A
Additionally, by rewriting system A's initial equation
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Let f(x) = |x| + 5
The graph of f(x) is transformed into the graph of g(x) by a translation of 4 units right
and a translation of 3 units down.
What is the equation for g(x)?
When a graph is translated to the right by a units, the x-coordinate of each point on the graph increases by a units. So the equation of the transformed function will have x - a in it.
When a graph is translated down by b units, the y-coordinate of each point on the graph decreases by b units. So the equation of the transformed function will have y - b in it.
Given f(x) = |x| + 5 and the graph of f(x) is transformed into the graph of g(x) by a translation of 4 units right and a translation of 3 units down, the equation of the transformed function g(x) will be:
g(x) = f(x - 4) - 3
This is because the x-coordinate increases by 4 units and the y-coordinate decreases by 3 units.
So the equation of g(x) is:
g(x) = |x-4| + 5 - 3
g(x) = |x-4| + 2
This function g(x) will have the same shape as f(x) but shifted 4 units to the right and 3 units down.
Answer:
This function g(x) will have the same shape as f(x) but shifted 4 units to the right and 3 units down.
Step-by-step explanation:
A population proportion is 0.30. A random sample of size 150 will be taken and the sample proportion p will be used to estimate
the population proportion. Use the z-table..
Round your answers to four decimal places.
a. What is the probability that the sample proportion will be within ±0.03 of the population proportion?
b. What is the probability that the sample proportion will be within ±0.08 of the population proportion?
There is a 0.48 percent chance that the sample proportion will be within 0.03 of the population proportion.
How do you find the probability of a sample proportion for a population proportion?There is a 0.48 percent chance that the sample proportion will be within 0.03 of the population proportion. A sample of 500 people yields a population proportion of 1.00. A sample proportion has a 0.96 probability of being within 0.03 of the population proportion.
The number of successes (X) of the entire population (N) divided by the population size (N) gives the population percentage (p): p = X/N. The sample proportion (p) is calculated by dividing the number of successes observed in the sample (x) by the sample size (n): p = x/n. The sample proportion is determined in this way.
Event E in this puzzle equals game A. The likelihood of losing a game is 0.7 as a result.
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determine whether each relationship is proportional by graphing on a coordinate plane. explain your reasoning.
This answer states that when graphing a linear relationship (y = 2x) on a coordinate plane, the points form a straight line, indicating that the relationship is proportional. However, when graphing a non-linear relationship (y = x2) on a coordinate plane, the points form a parabolic curve, indicating that the relationship is not proportional.
A: Relationship 1:
The relationship between x and y is y = 2x.
When graphed on a coordinate plane, the points (0,0), (1,2), (2,4), (3,6), and (4,8) form a straight line, indicating that the relationship is proportional.
Relationship 2:
The relationship between x and y is y = x2.
When graphed on a coordinate plane, the points (0,0), (1,1), (2,4), (3,9), and (4,16) form a parabolic curve, indicating that the relationship is not proportional.
This answer states that when graphing a linear relationship (y = 2x) on a coordinate plane, the points form a straight line, indicating that the relationship is proportional. However, when graphing a non-linear relationship (y = x2) on a coordinate plane, the points form a parabolic curve, indicating that the relationship is not proportional.
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Find the volume of a sphere with a diameter of 16 meters
Answer: V≈2144.66m³
Step-by-step explanation:
What is the greatest integer $x$ for which $\frac79 > \frac{x}{13}$?
The greatest integer x is 3 in the given expression.
How to calculate the greatest integer?Some function [] rounds DOWN a number to the nearest integer. For example [1.5]=1, [2]=2, [-1.5]=-2
A number can be an integer if it is both whole and negative. Accordingly, a set of integers is formed if we combine negative numbers with whole numbers. An integer is a positive or negative number, including zero, that has no decimal or fractional parts. -5, 0, 1, 5, 8, 97, and 3, 043 are a few examples of integers. Z is the symbol for a collection of integers.
Thus
[-1.6]+[3.4]+[2.7]
=-2+3+2
=3
The greatest integer function rounds off the given number to the nearest integer. Hence, the formula to find the greatest integer is very simple.
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a shaded parallelogram is drawn inside a rectangle
Area of the parallelogram attached in the figure is solve to be
40 square cmHow to solve for the area of the parallelogramThe area of parallelogram is solved using the formula
= base x height
From the problem it can be deduced that
base = 12 cm - 2 cm = 10 cm
height = 4 cm
Area of the parallelogram = 10 * 4
Area of the parallelogram = 40 square cm
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HELP ME OUT PLEASE! ITS DUE ON MONDAY!
The image is cropped so I can't answer it :(
A fossil bed in Indiana has a length of 5/8 miles and an area of about 1/4 square mile. What is the width?
Answer:
2/5 = w
Step-by-step explanation:
area = length x width
1/4 = 5/8w
isolate 'w' by dividing each side by 5/8
remember, when dividing fractions you must multiply by the reciprocal
1/4 x 8/5 = w
8/20 = w
simplify:
2/5 = w
What is a divided by a % of a?
Please I’m so confused
When you divide a by a percentage of a, you are essentially trying to find out what the percentage of a represents in terms of the value of a.
The percentage of a is represented by the formula (a * x%)/100, where x is the percentage. So if you divide a by (a * x%)/100, you get the following:
a / (a * x%)/100 = 100/x%
This is the equivalent of multiplying a by 100/x%. It's the representation of the percentage in terms of the value of a.
For example:
If a = 100 and x = 20, then a% of a is (10020)/100 = 20. So, a / (a20%) = 100/20 = 5
It means that 20% of 100 is 20 and dividing 100 by 20% of 100 is equal to 5.
Hopefully that helped and didn't make it more confusing.
Course Contents Homework Assignment 1 And the Rain Came Tumbling Down ...
And the Rain Came Tumbling Down
Due this Friday, Jan 20 at 11:59 pm (EST)
The cubit is an ancient unit. Its length equals six palms. (A palm varies from 2.5 to 3.5 inches depending on the individual.) We are told Noah's ark was 300 cubits long, 50 cubits wide, and 30 cubits
high. Estimate the volume of the ark (in cubic feet). Assume the ark has a shoe-box shape and that 1 palm = 2.50 inch.
8.79x105
You are correct.
Your receipt no, is 160-1146
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To appreciate the answer above, estimate the volume of a typical house. Assume a shoe-box shape, 53.0 feet long, 30.0 feet wide and 12.0 feet high. Calculate the ratio of the volume of the ark to
that of the house.
Submit Answer Incorrect. Tries 1/10 Previous Tries
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The volume of the ark is about 1.44 million cubic feet.
What is unit conversion mean?
A unit conversion expresses the same property as a different unit of measurement. For instance, time can be expressed in minutes instead of hours, while distance can be converted from miles to kilometers, or feet, or any other measure of length.
First, we need to convert the measurements from cubits to inches.
We know that one cubit is equal to six palms and that one palm is equal to 2.5 inches. So, we can convert the measurements of the ark by multiplying the number of cubits by the number of inches per cubit:
Length of ark = 300 cubits x 6 palms/cubit x 2.5 inches/palm = 4500 inches
Width of ark = 50 cubits x 6 palms/cubit x 2.5 inches/palm = 750 inches
Height of ark = 30 cubits x 6 palms/cubit x 2.5 inches/palm = 450 inches
Next, we can find the volume of the ark by multiplying these dimensions together:
Volume of ark = 4500 inches x 750 inches x 450 inches = 1.42 x 10^9 cubic inches
Finally, we can convert cubic inches to cubic feet by dividing by the conversion factor of 1 cubic foot = 12 x 12 x 12 cubic inches.
1.42 x 10^9 cubic inches / (12x12x12 cubic inches/cubic foot) = 1.44 x 10^6 cubic feet
Hence, the volume of the ark is about 1.44 million cubic feet.
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Solve the following radical equation
√4z²-13z+9+3∛=3z
Beginning with the first answer box. If applicable, the second answer box may be left blank
The solution to the radical equation is 9/7
How to determine the solutionFrom the question, we have the following radical equation
√4z²-13z+9+3∛=3z
Complete the equation
So, we have the following representation
√4z² -13z + 9 + 3∛27 = 3z
Evaluate the radicals
The equation becomes
2z - 13z + 9 + 3 * 3 = 3z
So, we have
2z - 13z + 9 + 9 = 3z
Evaluate the like terms
So, we have the following
14z = 18
Divide both sides by 14
z = 9/7
Hence, the solution is 9/7
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Let X1, X2, … X100 all be independent Bernoulli variables, which take a value of 1 with probability 0.5. Estimate the probability that X1 + X2 +...+ X100 < 60
The probability that X₁ + X₂ + ........ + X₁₀₀ <60 is 0.9713.
What is Bernoulli Distribution?Bernoulli distribution is the probability distribution which is discrete of a random variable X, which has the value 1 if the probability is p and the value is 0 when the probability is 1-p.
We have the measure of z score of a normal distribution as,
z = (X - μ) / σ
After finding the z value. the p value of the corresponding z score can be found.
Binomial distribution is the probability of x random variables or successes on n trials where p is the success of each trial.
In binomial distribution,
μ = [tex]np[/tex] and σ = [tex]\sqrt{np(1-p)}[/tex]
n = 100 and p = 0.5
μ = 100 (0.5) = 50
σ = [tex]\sqrt{50(1-0.5)}[/tex] = 5
We have to find the probability that the sum is less than 60.
Using continuity correction, it is P(X < 59.5).
z = (X - μ) / σ
z = (59.5 - 50) / 5 = 1.9
The p value corresponding to z = 1.9 is 0.9713.
Hence the probability that the X₁ + X₂ + ........ + X₁₀₀ <60 is 0.9713.
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PLEASE HELP SUPER URGENT!!!!!
Answer 3:
At the end of the first hour, there would be 5 amoebas from the first group and 53=15 amoebas from the second group, a total of 5+15 = 20 amoebas.
At the end of the second hour, there would be 55 = 25 amoebas from the first group and 153 = 45 amoebas from the second group, a total of 25+45 = 70 amoebas.
At the end of the third hour, there would be 5^3 = 125 amoebas from the first group and 453 = 135 amoebas from the second group, a total of 125+135 = 260 amoebas.
Answer 4:
Using the formula N = No eRt where N is the population, No is the initial population, R is the exponential growth rate, and t is the time in days.
N = 104 * e^(0.11714) = 1042.813 = 292.56, rounded to the nearest rabbit would be 293.
So, the population of rabbits after 14 days would be 293.
−4≤−2(y−1)<2
Step 1 of 2 : Solve the inequality and express your answer in interval notation. Use decimal form for numerical values.
The inequality is solved to and represented in interval notation as follows
(-∞, 3] [0, ∞)How to find the values of y in the inequalityThe inequality is made of two sets and can be separated as
−4 ≤ −2(y − 1)
−2(y − 1) < 2
solving the first
−4 ≤ −2(y − 1)
−4 ≤ −2y + 2
−4 - 2 ≤ −2y
-6 ≤ −2y
divide through by -2
y ≤ 3
solving the second
−2(y − 1) < 2
−2y + 2 < 2
−2y < 2 - 2
−2y < 0
divide through by -2
y > 0
the inequality in interval notation is
(-∞, 3] [0, ∞)
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Find the indefinite integral of each of the following by using [ f'(x)[f(x)"]dx =[ [f(x)]^n+1 / n+1] + c, where n #1
(a) e^x (3 - e^x)^4 dx
(b) 3e^2x √(1 + e²x) dx
(c) 3e^-2x / (1 + e^-2x)^3 dx
(d) 4 cos 2x sin³ 2x dx
(e) sec² 3x tan³ 3x dx
(f) 2+tan ² x / cos² x dx
Answer:
a) e^x (3 - e^x)^4 dx
Using the formula [ f'(x)[f(x)"]dx =[ [f(x)]^n+1 / n+1] + c, where n = 1,
we have:
e^x (3 - e^x)^4 dx = (e^x)^5 (3 - e^x)^4 / 5 + c
= (e^5x - 4e^4x + 6e^3x - 4e^2x + e^x) / 5 + c
b) 3e^2x √(1 + e²x) dx
Using the formula [ f'(x)[f(x)"]dx =[ [f(x)]^n+1 / n+1] + c, where n = 1,
we have:
3e^2x √(1 + e²x) dx = (3e^2x)^2 * (1 + e²x)^(3/2) / 2 + c
= (9e^4x + 3e^2x) / 2 + c
c) 3e^-2x / (1 + e^-2x)^3 dx
Using the formula [ f'(x)[f(x)"]dx =[ [f(x)]^n+1 / n+1] + c, where n = 1,
we have:
3e^-2x / (1 + e^-2x)^3 dx = -(3e^-2x)^2 / (1 + e^-2x)^2 + c
= -(9e^-4x) / (e^-4x + 2e^-2x + 1) + c
d) 4 cos 2x sin³ 2x dx
Using the formula [ f'(x)[f(x)"]dx =[ [f(x)]^n+1 / n+1] + c, where n = 1,
we have:
4 cos 2x sin³ 2x dx = -4 cos 2x (sin 2x)^4 / 4 + c
= -(cos 2x) (1 - cos 4x)^2 / 2 + c
e) sec² 3x tan³ 3x dx
Using the formula [ f'(x)[f(x)"]dx =[ [f(x)]^n+1 / n+1] + c, where n = 1,
we have:
sec² 3x tan³ 3x dx = -sec² 3x (tan 3x)^4 / 4 + c
= -sec² 3x (sec² 3x - 1)^2 / 4 + c
f) 2+tan ² x / cos² x dx
Using the formula [ f'(x)[f(x)"]dx =[ [f(x)]^n+1 / n+1] + c, where n = 1,
we have:
2+tan ² x / cos² x dx = ln|sec x| + c
It's worth noting that all these integrals are indefinite, which means that the constant c is arbitrary, and the actual antiderivative depends on the problem context.
Step-by-step explanation:
HELPPP Enter the average exam grade of students who studied, followed by the average exam grade of the students who did not study, using two significant figures, separated by a comma
The average value of exam grade of students who studies is 92 and students those who did not studied is 68.
What is the average?We have the following information for this case:
Students those who studied:
Exam grade: 94 96 90 88 88 100 78 95 97 94
The sample mean is calculated using the formula:
X = Σxi/n
If we replace the given values, we get:
X = (94 + 96 + 90 + 88 + 88 + 100 + 78 + 95 + 97 + 94)/10
= 920 / 10
= 92
Students those who did not study is :
Exam grade = 64 73 71 64 56 49 89 67 76 71 64 56 49 89 67 76 71
The sample mean is calculated using the formula:
X = Σxi/n
By substituting we get:
X= 64 + 73 + 71 + 64 + 56 + 49 + 89 + 67 + 76 + 71 + 64 + 56 + 49 + 89+ 67 + 76 +71
= 680 / 10
= 68
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Which of the following types of words must be capitalized? (5 points) a A government position when it comes before a specific name b Time of year when mentioned in a general way c The last word in a narrative sentence d Every word in a book title
The types of words must be capitalized is
A) A government position when it comes before a specific name
What is Word Capitalization?In writing systems with a case distinction, capitalization (American English) or capitalisation (British English) refers to writing a word with its initial letter as a capital letter (uppercase letter) and the other characters in lower case. The phrase could also be used to describe the choice of text case.
Given:
In English, the initial word of a phrase and all proper nouns are written in capital letters (words that name a specific person, place, organization, or thing).
The initial word in a quotation and the first word following a colon may occasionally both need to be capitalized.
So, the types word can be capitalized is a government position when it comes before a specific name like President Obama.
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What is the answer for those expressions
a) Numerical Expression
b) Variable Expression (c)
c) Variable Expression (x)
d) Numerical Expression
What is a numerical expression and variable expression? A numerical expression is an expression that includes numbers and mathematical operations, such as addition, subtraction, multiplication and division. This type of expression typically results in a numerical value. An example of a numerical expression would be 2 + 4 = 6. A variable expression is an expression that includes variables and mathematical operations, such as addition, subtraction, multiplication and division. This type of expression does not result in a numerical value, instead it results in a variable or unknown value. An example of a variable expression would be x + y = z. In this expression, x and y are unknown variables and z is the unknown result of the expression. Variables can also be used in numerical expressions, such as 3x + 2 = 10. In this expression, 3x is a numerical expression, and x is a variable.To learn more about numerical expression refer to:
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Find the 8th term of the sequence below.
Tn = 2n²-3n - 6
T8 =
Sorry again I don’t understand how to do this :(
Answer:
8th term = 98
Step-by-step explanation:
Given equation,
→ Tn = 2n² - 3n - 6
Now the 8th term will be,
→ Tn = 2n² - 3n - 6
→ T8 = 2(8)² - 3(8) - 6
→ T8 = 2(64) - 24 - 6
→ T8 = 128 - 30
→ [ T8 = 98 ]
Hence, the 8th term is 98.
An automated car wash service has washed 67 cars so far this week. The business averages 260 cars per week.
a. What percent of the total expected cars have already been washed?
b. If 15% of the cars also get a wax job, how many wax jobs are done each week?
Answer:
a) ≈ 25.77% b) 39 wax jobsStep-by-step explanation:
a) Percent of already washed cars?
→ (67/260) × 100
→ 6700/260
→ 25.769
→ ≈ 25.77%
b) Wax job done each week will be?
→ (260/100) × 15
→ 2.6 × 15
→ 39 wax jobs
Hence, these are required answers.
Answer:
a) 25.8%
b) 39
Step-by-step explanation:
Given information:
An automated car wash service has washed 67 cars so far this week. The business averages 260 cars per week.Part aTo find the percent of the total expected cars that have already been washed, divide the number of cars already washed by the average number of cars washed per week:
[tex]\implies \dfrac{67}{260}=0.257692307...=25.8\%\; \sf (nearest\;tenth)[/tex]
Part bTo find the number of cars that get a wax job each week, find 15% of 260:
[tex]\begin{aligned}\implies 15\%\; \textsf{of}\;260&=\dfrac{15}{100} \times 260\\\\&=\dfrac{3900}{100}\\\\&=39\end{aligned}[/tex]
Therefore, 39 wax jobs are done each week.
