Answer:Answers below
Step-by-step explanation:
The average age of the zebras at the zoo can be found by adding up all of the ages and dividing by the number of zebras.
In this case, the ages of the zebras are 8, 11, 17, 7, 19.
To find the average age, we add up all of the ages: 8 + 11 + 17 + 7 + 19 = 62
Then we divide by the number of zebras (5): 62/5 = 12.4
So, the average age of the zebras at the zoo is 12.4 years old.
To find the standard deviation, we first need to find the variance.
The variance is the average of the squared differences from the mean.
We can find the variance by taking each value, subtracting the mean, squaring the result, and dividing by the number of zebras.
The standard deviation is the square root of the variance
So, the standard deviation of the zebras age is difficult to calculate by hand, but we can use a calculator to find the standard deviation, which is approximately 4.345 years.
Rounding to the nearest tenth:
The average age is 12.4 years old
The standard deviation is 4.3 years
Write a entence decribing a ituation that could be reapreented by the equation 4 divided 1 1/3
The equation could be described by "the product of three and the reciprocal of four divided by three"
What is a fraction?Is a number that expresses the portion of some number over a total. The number that expresses the portion is known as the numerator and the number that expresses the total is known as the denominator.
To solve this problem we must perform the corresponding algebraic operations with mixed fraction.
Original equation:
4 / (1 1/3)
A mixed operation is solved as follows:
For the denominator: the same denominator is placed.
For the numerator:
The value of the denominator is multiplied by the integer component.The result is added to the numerator of the fraction.We transform the mixed fraction into improper fraction and we have:
1 1/3 = [(3*1) + 1)] /3 = [3+ 1] /3 = 4/3
Now, describing the equation with the improper fraction we get:
4 / (4/3)
Solving the division with fractions we have:
(4*3) / 4
This means that "the product of three and the reciprocal of four divided by three"
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1 Write the area as a sum:
2 Write the area as a product:
The area of the shape as a sum is 2x^2 + 5x + 2.
The area of the shape as a product is (x+2) (2x+1).
What is area of a shape?
A figure surrounded by a barrier is referred to as a shape. Numerous things in shapes like square, rectangle, round, etc. are all around us.
The space around by a shape's perimeter or boundary is known as its area. Using particular mathematical methods, we may determine the area of shape for various geometric shapes.
Area as a sum
For this, we will simply add all the values given in the figure
⇒ x^2 + x^2 + x + x + x + x + x + 1 + 1
⇒ 2x^2 + 5x + 2
So, the area of the shape as a sum is 2x^2 + 5x + 2.
Area as a product
The shape given is a rectangle
Area of a rectangle is length * width
Now, the length is x+2 and the width is 2x+1
So, the area is
⇒(x+2) (2x+1)
So, the area of the shape as a product is (x+2) (2x+1).
Hence, the area of the shape as a sum and as a product are obtained.
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Answer for this and an simple explanation thank you very much
The percentage of 100 square quadrilateral grid shaded is 96%.
What is a Square?Having four equal sides, a square is a quadrilateral. There are numerous square-shaped objects in our immediate environment. The equal sides and 90° internal angles of each square form serve as indicators of its identity.A square is a closed, four-sided, two-dimensional (2D) shape. In a square, all four sides are equal and parallel to one another.A square is a closed form with four equal sides and interior angles that are both 90 degrees. Three fundamental square formulas are frequently employed in geometry. The first one involves computing its area, the second one involves computing its perimeter, and the third one involves computing the diagonal of a square formula.since there are 4 unshaded grids and rest 96 are shaded then the percentage will be
shaded percentage = 96 × 100/100 = 96%
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What's the square of 144?.
The square of 144 is 20736. We can get the square of a number when the number is multiplied by itself.
A square of a number can determined when a number or integers multiplied by itself. For example,
when 4 is multiplied by 4 itself we get the number 16. 16 is the square of 4. similarly, when 144 is multiplied by itself we get the value of 20736. here, 20736 is the square of 144.
Multiplying the number with itself is called the square of that number. For the square of a number the exponent used is 2. square of number can be taken as positive. It is because when the negative number is multiplied by itself it becomes positive. so the square of a number is always a positive number.
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What is the trigonometric ratio of Cosθ?.
When we have a right triangle, Cos = a / h, according to the cosine law. In this situation, the letter "a" stands for adjacent.
The hypotenuse, denoted by the letter "h," can be calculated using the Pythagorean Theorem. All you need to get cosine is the hypotenuse and the neighboring side.
The ratio of the length of the side next to the angle divided by the length of the triangle's hypotenuse is known as the cosine of an angle.
The triangle's sides, a, b, and c, are determined using the cosine formula, which is given as
c = [a2 + b2 - 2ab cos C]
According to the Cosine Rule in trigonometry, the square of the length of any side of a given triangle equals the sum of the squares of the other sides minus twice the product of the other two sides multiplied by the cosine of the angle that separates them.
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So far Mr. Sahid ha read 177 page of her 392 page book about how many page doe he have left to read
Mr. Sahid has 215 pages left to read.
To determine how many pages Mr. Sahid has left to read, you simply need to subtract the number of pages he has already read (177) from the total number of pages in the book (392).
392 pages (total number of pages in the book)
177 pages (number of pages already read)
= 215 pages (number of pages left to read)
So, Mr. Sahid has 215 pages left to read.
It's important to note that this calculation assumes that Mr. Sahid has not skipped any pages and has read every page from start to finish.
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The equation y = 13,000x + 65,000 can be used to determine the total number of miles driven, y, on Franklin's used car based on the number of months, x, after he purchased it. What is the meaning of the y-intercept of the function?
A.Franklin drove about 13,000 miles each month.
B.The car had been driven 65,000 miles when Franklin purchased it.
C.The car had been driven 13,000 miles when Franklin purchased it.
D.Franklin drove about 65,000 miles each month.
Answer:
B.The car had been driven 65,000 miles when Franklin purchased it.
All the angles in the figure are right angles and lengths are measured in centimeters. What is the area, in square centimeters, of the figure?
Answer:
So, the area of the rectangle is
13
×
3
=
39
square centimeters.
The figure was divided such that none of the shapes overlapped.
However, the shapes combinedly form the entire figure.
So, the area of the entire figure is
36
+
39
=
7
37 buyer came to the "Electronic World" tore. 23 people bought new earphone, 17 bought a new phone, 13 people did not buy either. How many people bought both earphone and a phone?
Answer:
Step-by-step explanation:
PLEASE HELP ASAP. URGENT HELP NEEDED.
Answer: 10.6cm
Step-by-step explanation:
refer to the image for steps
how do u solve for x?
To solve for x in an equation, you will need to use algebraic techniques to isolate x on one side of the equation. The specific steps will depend on the equation you are trying to solve.
Here are a few examples of how to solve for x in different types of equations:
Linear equation: An equation of the form ax + b = 0, where a and b are constants. To solve for x, you would subtract b from both sides and then divide both sides by a.
Quadratic equation: An equation of the form ax^2 + bx + c = 0, where a, b, and c are constants. To solve for x, you would factor the equation or use the quadratic formula.
System of equations: A set of equations with multiple variables, such as 2x + 3y = 5 and 4x + 6y = 10. To solve for x, you would use elimination or substitution method.
I have been stuck on this maths question for 3 hours pls help
the sum of two consecutive integers if the first integer is x
In need if helpp ..................
Answer: A:171
Step-by-step explanation:
How do you plot and label points on a coordinate plane?.
Two parallel lines called the x axis and the y axis are employed for graph or plot points. The x axis is on the horizontal number line, while the y axis is on the vertical line. The positive and negative axes of the x axis are arranged to the right and left of the origin, respectively.
The following format is employed to plot a point's coordinates: (x, y). As is evident, the x-coordinate is frequently placed first. For example, we have determined the x and y coordinates for the respective points B and D in the diagram we have been using. Point B's x-coordinate is 100.
Any position on the plane may have its x- and y-coordinates established using its horizontal and vertical distances from the origin. In essence, what we do when we sketch a point is the complete antithesis of what we do here.
Labelling:
Our x-coordinate is as follows:
Positive if it's in the appropriate area of our plane.
If it is on the left side of our plot, it is not ideal.
If it is on the x-axis, then it is 0.
Our y-coordinate is as follows:
If it is in the top part of our plot, it is a good indicator.
If it is in the bottom part of our plot, it is not good.
If it is on the y-axis, it will be 0.
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-2.4 + 0.4f - 12 - 6 simplified
Step-by-step explanation:
-2.4 + 0.4f - 12 - 6 can be simplified as follows:
-2.4 - 12 = -14.4
0.4f - 6 = 0.4f - 6
So, the simplified expression is:
-14.4 + 0.4f
or
-14.4 + 0.4f is the simplified form of -2.4 + 0.4f - 12 - 6
Which equation can be solved by using this system of equations? startlayout enlarged left-brace 1st row y = 3 x cubed minus 7 x squared + 5 2nd row y = 7 x superscript 4 baseline + 2 x endlayout 3 x cubed minus 7 x squared + 5 = 0 3 x cubed minus 7 x squared + 5 = 7 x superscript 4 baseline + 2 x 7 x superscript 4 baseline + 2 x = 0 7 x superscript 4 baseline + 3 x cubed minus 7 x squared + 2 x + 5 = 0.
The equation can be solved by using this system of equations is
1st Row y = 3 x cubed minus 7 x squared 5
A system of equations is a set of one or more equations involving a number of variables.
The solutions to systems of equations are the variable mappings such that all component equations are satisfied—in other words, the locations at which all of these equations intersect.
What are the 3 types of system of equations?
There are three types of systems of linear equations in two variables, and three types of solutions.
→ An independent system has exactly one solution pair. The point where the two lines intersect is the only solution.
→ An inconsistent system has no solution.
→ A dependent system has infinitely many solutions.
Therefore, the equation can be solved by using this system of equations is
1st Row y = 3 x cubed minus 7 x squared 5
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121 divided by 12.75
Answer: 9.49 or (484/51)
Step-by-step explanation:
121/12.75 = 9.49 as a decimal or 484/51 as a fraction
The table below shows the snowfall in a north eastern city in inches for the first week in January.find the aver Rate of change in the number of inches of snowfall from January 8 to January 11
The average rate of change in the number of inches of snowfall from January 8 to January 11 include the following: A. 2/3 in.
What is the rate of change?In Mathematics, the rate of change is sometimes referred to as slope or gradient and it can be calculated by using this formula;
Rate of change, m = (Change in y-axis, Δy)/(Change in x-axis, Δx)
Rate of change, m = (y₂ - y₁)/(x₂ - x₁)
Next, we would determine the rate of change of the value of snowfall (y) with respect to the date (x), which represents a line that is passing through the data points (8, 10) and (11, 12):
Rate of change, m = (12 - 10)/(11 - 8)
Rate of change, m = 2/3.
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Complete Question:
Find the average rate of change in the number of inches of snowfall from January 8 to January 11.
Choose: 2/3 in. 2 in. 3 in. 6 in.
What is the slope of =- 6?.
Since the line is constantly at 6, it crosses the y-axis at that point. The slope is 0 because the line is horizontal.
What is Y = - 6's slope?The slope is 0 0 when expressed in the slope-intercept form. All parallel lines to y=6 have a slope of 0, which is the same.
How should the slope intercept form be written?When the slope of the line being studied is known, and the provided point is also the y intercept, the slope intercept formula, y = mx + b, is utilized (0, b). The y value of the y intercept point is represented by b in the equation.
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4) A cereal box has dimensions of 7% inches, 12 inches, and 2 inches. A pastry box has dimensions of 3%
inches, 3 % inches, and 2 % inches. What is the difference in volume, in cubic inches, between the two boxes?
Show your work.
The difference in volume between the cereal box and pastry box is 167.991 cubic inches.
What are Dimensions?
Dimensions refer to the measurement of the size or extent of an object or space in a particular direction, such as length, width, and height. In the context of boxes, dimensions are used to describe the length, width, and height of a box, usually given in inches or centimeters.
To find the volume of a rectangular box, we use the formula:
Volume = length x width x height
Let's first find the volume of the cereal box:
Volume of cereal box = 7 inches x 12 inches x 2 inches = 168 cubic inches
Now let's find the volume of the pastry box:
Volume of pastry box = 3% inches x 3% inches x 2% inches = 0.009 cubic inches
Now, to find the difference in volume between the two boxes, we subtract the volume of the pastry box from the volume of the cereal box:
168 cubic inches - 0.009 cubic inches = 167.991 cubic inches
Hence, the difference in volume between the cereal box and pastry box is 167.991 cubic inches.
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Write the polynomial expression is which the GCF of is factored from the polynomial 2x^(6 - )12x^(4)
The polynomial expression 2x⁶ - 12x⁴ in GCF factored form is 2x⁴(x² - 6).
What is the greatest common factor?The greatest number that can divide the numbers in equal parts.
It is called as greatest common factor.
Given:
A polynomial expression,
2x⁶ - 12x⁴.
To factor the polynomial using GCF:
The GCF of 2x⁶ and 12x⁴,
= 2x⁴.
So, the polynomial is,
2x⁶ - 12x⁴ = 2x⁴(x² - 6)
Therefore, the GCF form of the polynomial is 2x⁴(x² - 6).
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What is the factor of x² 9x 18 0?.
The factors of equation, x²- 9x + 18 = 0 are (x- 3)(x- 6), where x is variable.
Factorization is a mathematical process that is applied to split a number, an expression, matrix etc. into the product of factors such that when we multiplied these factors again we get the original one. We have, an equation is x² - 9x + 18 = 0 --(*) and we have to factorize it. Steps to factorize the quadratic equation, ax² + bx + c = 0, are :
Splitting the middle term, b such that the product of splitting terms is ac and sum or difference is b. grouping the terms factors of each groupNow, comparing the equation (*) with standard equation we get, a = 1 , b = -9 , c = 18.
So, Split the number 9, into 6 and 3
=> x² - 9x + 18
=> x² - 6x - 3x + 18
=> (x² - 6x) - (3x - 18) [ grouping]
=> x( x - 6) - 3( x-6) [ factors of group ]
=> (x- 3)(x- 6)
so, x² - 9x + 18 = (x- 3)(x- 6) = 0 helps to get the solution of it (x- 3)(x- 6) = 0 => x = 6,3
Hence, the required factors are (x- 3)(x- 6).
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Complete question:
What is the factor of x² - 9x + 18 = 0?.
If DE=x+15, and DF=55, and EF=10,
What is x?
What is DE?
The value of x is 20 units and the measure of DE is 35 units.
What is line segment?A line segment is a path between two points that can be measured. Since line segments have a defined length, they can form the sides of any polygon.
Given that, DE=x+15, DF=55, and EF=10.
Here, DF=DE+EF
55=x+15+10
55=x+25
x=20
So, DE=x+15=35
Therefore, the value of x is 20 units and the measure of DE is 35 units.
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How many significant figures does the number 1.006 x 10⁷ have?A) 3B) 4C) 5D) 6E) 8
Answer: C. 4
Step-by-step explanation:
The number 1.006 x 10⁷ has four significant figures. The power of 10 in scientific notation doesn't influence the number of significant figures.
Explanation:The number of significant figures in the number 1.006 x 10⁷ is determined by the digits of the number itself, excluding any powers of 10. The power of 10 in scientific notation doesn't influence the number of significant figures. So, here, we only consider 1.006 which has four digits, all of which are significant. Therefore, the number 1.006 x 10⁷ has 4 significant figures.
So, the answer is B) 4.
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A waterwheel with a radius of 10 feet is positioned so that its center is 8 feet above the water.
The waterwheel rotates at 5 revolutions per minute. You start your stopwatch. Two seconds later, Point P on the rim is at its lowest point. Assume that y varies sinusoidally with t, where y is the distance of point P from the surface of the water in terms of the number of + seconds that the stopwatch reads.
A. Write an equation: y=
B. Predict the distance from the surface of the water when the stopwatch reads 17.2 seconds
C. At 40 seconds is the point on the wheel going into the water or coming out?
Answer:
A. y = 8 - 10sin(5πt)
B. y = 8 - 10sin(5π(17.2)) = 8 - 10sin(86π) ≈ 8 - 10(-0.99) ≈ 18.9
C. At 40 seconds, the point on the wheel is coming out of the water.
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Write an equation with a variable on both sides of the equal sign that has infinitely many solutions. Solve the equation and explain why it has an infinite number of solutions.
The equation has to be a true statement.
Start with a true statement: 8 = 8
Now add 4x to both sides: 4x + 8 = 4x + 8
It's still a true statement.
Factor the right side: 4x + 8 = 4 (x+2)
Subtract 3 from both sides: 4x + 5 = 4(x+2) - 3
There's an example of an equation with infinitely many solutions. To solve it, work the process we used to create it in reverse.
a boat can travel 174 miles on 58 gallons of gasoline. How far can it travel on 39 gallons?
Answer:
117 miles
Step-by-step explanation:
174 miles ⇒ 58 gallons
A miles ⇒ 39 gallons
A = 174 miles * 39 gallons / 58 gallons
A = 117 miles
solve for x x/5+5=8
Answer:
x<13
Step-by-step explanation:
Answer:
x=15
Step-by-step explanation:
x+25/5=8
x+25=40
x=40-25
x=15
The radian measure of an angle θ is the length of thea) opposite sideb) diameter c) hypotenused) arc that subtends the angle in a circle of radius pi141/2pi/2
The radian measure of an angle theta is the length of the arc that subtended angle 2Pi
We can measure angles in two forms degrees or Radians.
Radian can be described as a measure of the angle subtended by a circular arc. It can be defined as the ratio of the arc length subtending angle to the radius of the circle.
One radian is the measure of the angle subtended by an arc that is equal to the radius of the circle.
Therefore, the radians measure an angle theta the length of the arc.
Θ =s/r ,
where theta is the angle subtended, s is the arc length and r is the radius of the circle.
We know that the 2π radians = 360 degrees.
That subtends the angle in a circle of radius 2Pi
Therefore, The radian measure of an angle theta is the length of the arc that subtended angle 2 Pi
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