Answer:
56
Step-by-step explanation:
Take 70 and multiply 80%
70 × 80/100 = 56
What is the formula for log A log B?.
The formula for the logarithmic function log A ± log B is given by
log A + log B = log ( AB )
log A - log B = log ( A / B )
As given in the question,
For the given logarithmic function is given by :
Addition of two logarithmic function represents the multiplication of two numbers.
log ( A × B ) = log A + log B
Example : log ( 6 )
= log ( 2 × 3 )
= log 2 + log 3
Subtraction of two logarithmic function represents the division of two numbers.
log ( A ÷ B ) = log A - log B
Example :
log ( 5 ÷ 2 ) = log 5 - log 2
Therefore, the formula of the logarithmic function log A ± log B is given by :
log A + log B = log ( AB )
log A - log B = log ( A / B )
The above question is incomplete, the complete question is:
What is the formula for logarithmic function log A ± log B?.
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solve for a side in right triangles
Answer:
AC ≈ 4.28
Step-by-step explanation:
using the tangent ratio in the right triangle
tan35° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{3}{AC}[/tex] ( multiply both sides by AC )
AC × tan35° = 3 ( divide both sides by tan35° )
AC = [tex]\frac{3}{tan35}[/tex] ≈ 4.28 ( to the nearest hundredth )
What would determine the value of Edubucks?
The value of Edubucks would be determined by a variety of factors, including:
supply and demand, the overall economic environment, and any news or events related to the company or the education industry as a whole.Additionally, speculation and sentiment could also play a role in determining the value of Edubucks.
What is an Edubucks?Edubucks is a virtual currency created by the educational platform Edmodo. It is used to reward students for completing tasks and participating in activities on the platform.
Also, Edubucks could also be described as the virtual currency created to motivate or compensate the effort made on certain task done by students which is meant to boost their morales and aid their eagerness to doing more.
Therefore, the correct answer is as given above
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What is the conjugate of 4 3i?.
The complex conjugate of 4 − 3i is;
4 - (-3i) = 4 + 3i .
Now, According to the question:
The complex number is basically the combination of a real number and an imaginary number. The complex number is in the form of a+ib, where a = real number and ib = imaginary number. Also, a,b belongs to real numbers and i = √-1.
Hence, a complex number is a simple representation of addition of two numbers, i.e., real number and an imaginary number. One part of it is purely real and the other part is purely imaginary.
The complex conjugate of a + bi is a - bi
So, the complex conjugate of 4 − 3i is;
4 - (-3i) = 4 + 3i .
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How many real solutions are there?.
The sign of the discriminant [tex]b^{2}-4ac[/tex] of a quadratic equation determines how many real solutions there are to that quadratic equation.
The value of the expression is the discriminant of a quadratic equation in standard form : This quantity specifies how many different ways a quadratic problem can be solved.
Solutions to quadratic equations can be 0, 1, or 2. If the discriminant has a positive value, then there are two genuine solutions for x, and the graph of the solution has two different x-intercepts. There is only one actual solution for x if the discriminant's value is zero, which means that the solution's graph only has one x-intercept.
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¿Cuáles son las medidas de un cilindro (altura, radio) si su volumen es 500 cm3
The dimensions of the cylinder are -
{r} = √500/πh
{h} = (500/r²)
What are algebraic expressions?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.Given is the volume of the cylinder as -
V = 500 cm³
We can write -
V = 500
So, we can write -
πr²h = 500
So, we can write -
{r} = √500/πh
{h} = (500/r²)
Therefore, the dimensions of the cylinder are -
{r} = √500/πh
{h} = (500/r²)
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{Question in english -
What are the measurements of a cylinder (height, radius) if its volume is 500 cm3}
If p(x) = x² + 2√2x + 1, find p(2√2)
Answer: p(2√2) = 17
Step-by-step explanation:
Given,
p(x) = x² + 2√2x + 1....(i)
To find p(2√2) , we need to substitute x=2√2 in the given equation
p(2√2) = (2√2)² + 2√2(2√2) + 1
= 8 + 8 + 1
= 17
So p(2√2) is 17
Answer: 17
Step-by-step explanation:
[tex]P(x) = x^{2} + 2\sqrt2x + 1[/tex]
[tex]P (2\sqrt{2}) = 2\sqrt{2})^2 + 2\sqrt{2}*2\sqrt{2} + 1[/tex]
[tex]P (2\sqrt{2}) = 8 + 8 + 1[/tex]
[tex]P (2\sqrt{2}) = 17[/tex]
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Why is 36 not a perfect square?.
Yes, 36 is a perfect square because 36 = 2² × 3², all numbers are in the power of two. This means that the square root of 36 is a positive integer. Therefore, 36 is a perfect square.
Perfect squares are special numbers in mathematics that have a pair of integer factors that are equal to each other. A number N is called a perfect square if it is equas to product of number, x with itself. Formula for perfect square,
N = x²
this implies that if N is equals to second power of a whole number then N is called perfect squares. We have, N = 36 and we have to check that it is perfect square or not. For this, firstly determine the prime factors of 36, that is 36 = 2× 2× 3 × 3 . Now, 36 = 2² × 3² = 6² ( since, 2 and 3 are prime numbers, a²×b² = (ab)² ). Therefore, 36 is equals to square of whole number 6. So, 36 is perfect square.
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Complete question:
Why is 36 a perfect square? or Is 36 a perfect squares?
How do you find the partial sums rule?.
Partial sum rule is calculated by Sn=∑ni=1ai=n(a1+an)2.
A function may get close to two distinct limits. There are two scenarios: one in which the variable approaches its limit by values larger than the limit, and the other by values smaller than the limit.
A partial sum is the total of a limited number of the series' terms. To see how the infinite sum behaves, we can examine a collection of these sums. The index of the final term in the sum is used to denote each of these partial sums.
When a group of numbers, known as addends or summands, are added together in mathematics, the outcome is their sum or total.
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15 In the circle, AD = 100, & AD = 99. Find∢DCQ. (The figure is not drawn to scale.)
a. 31
b. 161
c. 62
d. 80.5
The value of m∠DCQ is 31°.
What is a measure of an angle?
An angle measure in geometry is the length of the angle created by two rays or arms meeting at a common vertex.
Here, we have
Given: mAD = 100, & m∠D = 99.
First, we find the measure of arc ABC
we know that
The inscribed angle is half that of the arc it comprises
so
m∠D = (1/2)[arc ABC]
we have
m∠D = 99°
substitute and solve for arc ABC
99° = (1/2)[arc ABC]
198° = [arc ABC]
Now, we find the measure of arc DC
we know that
arc ABC+arc AD+arc DC = 360° -----< by complete circle
substitute the given values
198°+100°+arc DC = 360°
arc DC = 360°-298°
arc DC = 62°
Now, we find the measure of angle DCQ
we know that
The inscribed angle is half that of the arc it comprises
so
m∠DCQ = (1/2)[arc DC]
we have
arc DC = 62°
substitute
m∠DCQ = (1/2)[62°] = 31°
Hence, the value of m∠DCQ is 31°.
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Two angles are supplementary. If the m∠A is five times the sum of the m∠B plus 7.2°, what is m∠B?
The angle measure of m∠B = 24°.
Two angles are supplementary.
What is an angle measure?When two lines or rays intersect at a single point, an angle is created. The vertex is the term for the shared point. An angle measure in geometry is the length of the angle created by two rays or arms meeting at a common vertex.
Given:
Two angles are supplementary.
The m∠A is five times the sum of the m∠B plus 7.2°.
That means,
5(B + 7.2) + B = 180
6B = 180 - 36
B = 24.
Therefore, the angle measures of m∠B = 24°.
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How do you decide whether to use substitution or elimination to solve a system?.
When deciding whether to use substitution or elimination to solve a system of linear equations, it is important to consider the size and complexity of the system.
Substitution is generally recommended for systems with two equations and two variables, as it can be a simpler and quicker approach. For larger systems with more equations and/or variables, elimination may be a better option as it can reduce the number of steps required to solve the system.
When using either method, it is important to keep track of all the steps you take and double check your work for accuracy. Additionally, both methods involve solving for one variable in terms of the others, so if you are dealing with an equation that already has only one unknown variable, then substitution could be the best approach. Ultimately, it is important to assess each situation individually and decide which method would be most effective.
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Draw a Venn Diagram to show the following categorical data.Hint: all 30 countin be listed neatly in your Venn Diagram
a. Counting numbers 0 ≤ n ≤ 30 that have 2 as a factor.
b. Counting numbers 0 ≤ n ≤ 30 that have 3 as a factor.
The required Venn diagram for the given condition has been shown.
What is a Venn diagram?A Venn diagram is a graphical representation of the relationship between sets or groups of items. It consists of overlapping circles, each representing a different set, with the overlapping areas showing the items that belong to both sets.
Here,
U = 0 ≤ n ≤ 30
A = 2 ≤ n ≤ 30 [multiple of 2]
B = 3 ≤ n ≤ 30 multiple of 3
From above, the rectangle represents the universal set u, and the circle represents the two subsets A and B.
Thus, the required Venn diagram for the given condition has been shown.
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Why the range of square root function Cannot be negative?.
In the realm of real numbers, there is no solution for square root of any negative number. Therefore, there is no negative range for the function f(x) = sqrt(x). The range extends from 0 to any number that is positive.
Why is a square root's range not negative?The range is [0,]=y: y≥0}. By looking at its defining equation, f(x)=x2, we can algebraically determine its domain. We are aware that the square root of a negative number cannot be taken. As a result, the expression that lies beneath the radical has to be positive or zero, not negative.
Can a negative square root function exist?However, negative square roots are also possible. Consequently, the number -6 can be a principal square root of the number 36, but not a square root. As a result, the principal square root and the negative square root both have the same number.
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What does it mean when your solving a linear equation and you get 2=2
Answer:
When you solve a linear equation and get 2=2, this means that the equation is true and there is no solution. This is because both sides of the equation are equal, so there is no value that can satisfy both sides of the equation at the same time.
give me brainiest
Answer: It means that the equation is balanced and both sides have the same value (they are equal)
What is the final step in solving the inequality 5 4x )< 6x 4?.
The inequality you provided is a linear inequality in one variable x. To find the solution to this inequality, we need to follow these steps:
First, we will simplify the inequality by combining like terms on the left side:
5 + 4x <= 6x + 4
4x <= x + 9
Next, we need to get x alone on one side of the inequality by subtracting x from both sides:
4x-x <= 9
3x <= 9
We will divide both sides of the inequality by 3:
x <= 3
The final step is to check our solution by plugging it back into the inequality and making sure that it satisfies the inequality: 5 + 4(3) <= 6(3) + 4
5 + 12 <= 18 + 4
17 <= 22 which is true
So the solution to the inequality 5 + 4x <= 6x + 4 is x <= 3. It's worth mentioning that this is the only solution that this inequality has since it's a linear inequality which has only one solution.
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Which angle in triangle ABC has the largest measure?
The angle with the largest measure is opposite the longest side. So the angle in triangle ABC has the largest measure is b) B.
About triangleA triangle is a geometric shape that has three vertices and three sides. The sides of a triangle are line segments of three different line segments. Meanwhile, the angles in a triangle are the intersections of two line segments that intersect at one point. Between the length and the size of the angle in a triangle has a proportional relationship, the greater the angle in the triangle, the longer the side opposite the angle.
Types of triangles include many different shapes but still have parts consisting of three sides and three angles. These types of triangles include equilateral triangles, isosceles triangles, arbitrary triangles, right triangles, obtuse triangles, and acute triangles.
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call thrown vertically in the air reaches its peak height after 3.5 seconds. If its height as a function of time is given by h=-16t^2+bt+4, then which of the following is the values of b?
(1) 56
(2) -56
(3) -112
(4) 112
A falling object's height above the ground at time t is calculated using the formula s (t) = 5t2 + v0t + s0, where s is measured in metres, t is measured in seconds, v0 is the starting velocity in metres per second, and s0 is the starting location in meters. Thus, option D is correct.
What is the height as a function of time?((0 - 24t2) - 30t) + 4 = 0 Pull out like factors: -16t2 - 30t + 4 = -2 • (8t2 + 15t - 2)
Factoring 8t2 + 15t - 2
The last term, "the constant", is -2 Multiply the coefficient of the first term by the constant 8 • -2 = -16. Rewrite the polynomial splitting the middle term using the two factors found in step 2 above1 and 16
8t2 - 1t + 16t - 2
Add up the first 2 terms, pulling out like factors:
t • (8t-1)
2 • (8t-1)
Add up the four terms of t • (8t-1)
(t+2) • (8t-1)
Therefore, 112 s the values of b.
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Ticket will cot $24. 00 per peron and there i one-time $12 group regitration fee. Write and expreion for the cot of the whole group if there i going to be p people going
The cost of the whole group would be: (24 * p) + 12 or 24p + 12.
The cost of a group of peopleThe expression (24 * p) + 12 represents the total cost of the group. The "24 * p" part represents the cost of the individual tickets, with "p" representing the number of people in the group. The "12" represents the one-time group registration fee. The expression calculates the total cost by multiplying the number of people in the group by the cost of an individual ticket, and then adding the group registration fee to that total.
Specifically, the operation being used is arithmetic, specifically multiplication and addition. The expression provided is used to calculate the total cost for a group by multiplying the number of people in the group by the cost of an individual ticket and then adding the group registration fee to that total. This is a basic mathematical operation that is a part of arithmetic.
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How do you describe the end behavior of the graph if the degree is even?.
If the degree of the function is even then the end behaviour of the graph depends upon the leading coefficients of the function .
The End Behaviour of the graph of the polynomial is defined by the degree and the leading coefficient of the polynomial .
the end behaviour for the even degree polynomial is given as ;
(i) If the degree of the polynomial is even and the lead coefficient is also positive, then both the ends of graph of polynomial will point up.
(ii) If the degree is of polynomial is even and the lead coefficient is negative, then both ends of graph of polynomial will point down.
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how to find the zeros and multiplicity of a polynomial
If a polynomial function can be factored, you can factor it and set each component's value to zero to find its zeros.
What is polynomial?A polynomial is an expression in mathematics made up of variables (also known as indeterminates) and coefficients, and it only uses the operations addition, subtraction, multiplication, and non-negative integer exponentiation of the variables. The polynomial x2 4x + 7 is an illustration of one with a single indeterminate x. Using mathematical operations like addition, subtraction, multiplication, and division, a polynomial is an equation made up of variables, constants, and exponents (No division operation by a variable). A polynomial function is a function in an equation, such as the quadratic equation, cubic equation, etc., that only uses non-negative integer powers or only positive integer exponents of a variable. A polynomial with an exponent of 1 is, for instance, 2x+5.If a polynomial function can be factored, you can factor it and set each component's value to zero to find its zeros. Finding the places at which the graph of a polynomial function crosses the x-axis is another method for locating its x-intercepts.To learn more about polynomial refer to:
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Select the correct answer from each drop-down menu.
A veterinarian's office recorded one particular week that they had 50 patients. The table shows the recorded number of dogs.
Monday Tuesday Wednesday Thursday Friday
7
4
5
5
2
Use the given data to complete the sample proportion and confidence intervals for this situation.
Percentage of patients that were dogs
90% confidence interval
95% confidence interval
1. The correct answer is 46 percent, 2. The correct answer is .07, 3. The correct answer is (34%,58%), 4. The correct answer is (32%,60%)
What is standard error?The term "standard error" is used to refer to the standard deviation of various sample statistics, such as the mean or median. For example, the "standard error of the mean" refers to the standard deviation of the distribution of sample means taken from a population. The smaller the standard error, the more representative the sample will be of the overall population.
The relationship between the standard error and the standard deviation is such that, for a given sample size, the standard error equals the standard deviation divided by the square root of the sample size. The standard error is also inversely proportional to the sample size; the larger the sample size, the smaller the standard error because the statistic will approach the actual value.
1. Let's calculate the percentage or proportion of patients that were dogs:
p = (7 + 4 + 5 + 5 + 2)/50 = 23/50 = 0.46
The correct answer is 46%
2. Let's estimate the standard error, using the given formula, this way:
S.e = √ (0.46 * 0.54)/50 = √0.049 = 0.07
The correct answer is .07
3. Let's calculate the confidence limits of the 90% confidence interval, this way:
Confidence limits = proportion +/- 1.645 * standard error
Confidence limits = 0.46 +/- 1.645 * 0.07
Confidence limits = 0.46 +/- 0.12
Confidence limits = 0.34, 0.58
The correct answer is (34%,58%)
4. Let's calculate the confidence limits of the 95% confidence interval, this way:
Confidence limits = proportion +/- 1.96 * standard error
Confidence limits = 0.46 +/- 1.96 * 0.07
Confidence limits = 0.46 +/- 0.14
Confidence limits = 0.32, 0.60
The correct answer is (32%,60%)
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What is the exponential function represented by the table below?
Political pollsters now make sure to conduct a percentage of their telephone interviews by calling mobile phones. This policy best addresses which potential source of bias?
Some of the population may not have access to other types of phones.
The survey only reaches individuals who volunteer to be interviewed.
The policy helps individuals understanding the wording of survey questions.
Some individuals contacted may choose to not participate.
The bias that is taken care of here is that; Some of the population may not have access to other types of phones. Option A
What is a bias?When we talk about a bias in research we mean the kind of scenario that is able to cause the result of a research to become lobe sided. In other words, it is that which introduces inaccuracy to a research.
A lot of people if not everyone has access to a mobile phone and this would help more people to be able to participate in the interview. Some of these people may not have any of the other kinds of phone.
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Answer:
A
Step-by-step explanation:
took the test
For what value of k do the equations kx 2y 3 and 3x y 5 represent two lines intersecting at a unique point?.
The equations kx – 2y = 3 and 3x + y = 5 will have a unique solution for k ∈ R - {-6}
Here we have equations kx – 2y = 3 and 3x + y = 5
Here we need to find a value for k such that the following equations have a unique solution.
a system of 2 linear equations
a₁x + a₂y + a₃ = 0
b₁x + b₂y + b₃ = 0
does not have a unique solution only when
a₁/b₁ ≠ a₂/b₂
Here
k = a₁, -2 = a₂
3 = b₁ 1 = b₂
Hence,
k/3 ≠ -2
or, k ≠ -6
Hence the equations will have a unique solution for k ∈ R - {-6}
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Complete Question
For what value of k do the equations kx – 2y = 3 and 3x + y = 5 represent two lines intersecting at a unique point?
19. Which can be used to find the product: 398 x 5? A 400-2 X 5 B (400 x 5) - (2 x 5) C (400 x 5) + (2 X 5) D (400 x 5) -2
The product of 398×5 is equal to (400-2)×5
What Is Distributive Property?According to this property, multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together.
Given here: The product of two numbers as 398×5
Now 398 can be rewritten as 400-2
Thus the expression 398×5 =(400-2)×5 ( Using distributive property)
1990 = 1990
Thus they are also equivalent.
Hence, The product of 398×5 is equal to (400-2)×5
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What is the binomial factor of the polynomial x³ Y³?.
The binomial factor for the given expression is x = 4.
In mathematics, a binomial is an expression that is made up of two terms. The binomial factor of an expression is the part of the expression that is written in the form (x - a)^n, where a is a constant and n is a positive integer.
The binomial factor of x³ is x³. The equation x³ = 64 is not a binomial equation, as it does not have the form (x - a)^n = 0, where a is a constant and n is a positive integer. If you are trying to solve for x in the equation x³ = 64, one solution is x = 4. However, there are also three other solutions, which are the cube roots of 64 that are not real numbers (they are complex numbers).
Hence, The binomial factor for the given expression is x = 4.
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How do u solve this?
Answer:
-f(x)
Step-by-step explanation:
Figure H is just Figure G reflected across the x-axis meaning that you just have to slap a negative symbol in front of whatever function gave you Figure H.
Find the difference. Show each step for full credit. Use ^ for exponents, for instance, x^2 means x
3n3+ 4n2– 9 and -2n3+ 4n – 9^323
5n³ + 4n² -4n + 720 is the difference between these two given expressions.
What are Systems of equations?Simultaneous equations, a system of equations Two or more equations in algebra must be solved jointly (i.e., the solution must satisfy all the equations in the system). The number of equations must match the number of unknowns for a system to have a singular solution.
There are four methods for solving systems of equations: graphing, substitution, elimination, and matrices.
Given a system of equation 3n³+ 4n²– 9 and -2n³+ 4n – 9³
We need to find the difference between These given Systems of equation
Difference = 3n³+ 4n²– 9 -( -2n³+ 4n – 9³)
Difference = 3n³+ 4n²– 9 + 2n³- 4n + 9³
Difference = 5n³ + 4n² -4n + 720
therefore, The difference between these two given equations is 5n³ + 4n² -4n + 720.
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Find a principal which will amount to Rs.2000 in 6 years 8 months at the rate of interest 5% per annum.
Answer:
1449.28
Step-by-step explanation:
To find the principal amount that will amount to Rs. 2000 in 6 years 8 months at a 5% interest rate per annum, we can use the formula for compound interest:
A = P (1 + r/n)^(nt)
Where:
A = final amount
P = principal (the amount we are trying to find)
r = interest rate per annum (in decimal form)
n = number of times interest is compounded per year
t = time in years
In this case, the final amount is Rs. 2000, the interest rate is 5% per annum (or 0.05 in decimal form), the number of times interest is compounded per year is 1 (since the interest is compounded annually), and the time is 6 years 8 months (or 6.67 years in decimal form).So we can substitute these values into the formula and solve for P:
2000 = P (1 + 0.05)^(1 * 6.67)
To solve this equation, we can use a calculator or a spreadsheet to calculate the right side of the equation: (1+0.05)^6.67 = 1.382000 = P * 1.38
P = 2000/1.38
P = 1449.28
The principal amount that will amount to Rs. 2000 in 6 years 8 months at a rate of interest of 5% per annum is Rs. 1281.97.
The principal amount (P) that will amount to Rs. 2000 in 6 years 8 months at the rate of interest of 5% per annum can be calculated using the formula for compound interest:
A = P(1 + r/n)^(nt)
Where:
A = final amount
P = principal
r = rate of interest (5% per annum = 0.05)
n = number of times the interest is compounded per year (e.g. annually, semi-annually, quarterly)
t = time in years (6.67 years = 6 years 8 months)
Let's assume n = 12 (monthly compounding)
Substituting the values into the formula, we get:
2000 = P(1 + 0.05/12)^(12*6.67)
(To solve for P, we can divide both sides of the equation by the right side of the equation)
P = 2000 / (1 + 0.05/12)^(12*6.67)
P ≈ Rs. 1281.97
Therefore, the principal amount that will amount to Rs. 2000 in 6 years 8 months at a rate of interest of 5% per annum is Rs. 1281.97
It's important to note that this calculation is based on the assumption that the interest is compounded monthly, if the interest is compounded annually or semi-annually the amount will be different.
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