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3 years ago

To which power must you raise the expression y 1/5 to get y as the result

Mathematics

1 answer:

aleksklad [387]3 years ago

7 0

Answer:

Step-by-step explanation:

Given y^1/5, to get y, the power must be 1. Using the rules of exponents, (y^1/5)^x = y, such that (1/5)x = 1. Therefore, x = 5.

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In ΔWXY, the measure of ∠Y=90°, XW = 85, WY = 84, and YX = 13. What is the value of the cosine of ∠W to the nearest hundredth?

IgorLugansk [536]

Answer: 0.99

Step-by-step explanation:

SOH CAH TOA

CAH: cosine = adjacent/hypotenuse

Cosine of angle w = 84/85 = 0.98823 ≈ 0.99

Angle Y is 90 degrees, meaning it's a right triangle. Therefore angle W is the top/tip of a triangle, while X is the angle next to Y. If you plug in the information afterwards and follow the trigonometry rule (SOH CAH TOA) you will find your answer.

4 0

3 years ago

A simple linear regression analysis was conducted to predict the Exam 3 score of students in STA 2023 based on their Exam 1 scor

Katena32 [7]

Answer:

Option A) As the Exam 1 score increases by 1 point, the student's Exam 3 grade will increase, on average, by 0.4845 points.

Step-by-step explanation:

We are given the following in the equation:

A simple linear regression analysis was conducted to predict the Exam 3 score of students in STA 2023 based on their Exam 1 score.

Thus, Exam 3 score becomes the dependent variable and exam 1 score is the independent variable.

The regression equation is given by:

$\hat{y} = 50.57+0.4845x$

Comparing the equation to a linear equation:

$y = mx + c$

m = 0.4845

c = 50.57

Where m is the slope and tells the rate of change and c is the y intercept that is the value of y when x is 0.

When, there is a increase in x, we can write:

$\hat{y}(x) = 50.57+0.4845x\\\hat{y}(x+1) = 50.57+0.4845(x+1)\\\hat{y}(x+1) - \hat{y}(x) = 50.57+0.4845(x+1)-(50.57+0.4845x)\\\hat{y}(x+1) - \hat{y}(x) = 0.4845$

Thus, the slope of equation can be interpreted as:

Option A) As the Exam 1 score increases by 1 point, the student's Exam 3 grade will increase, on average, by 0.4845 points.

5 0

3 years ago

mary ann is building a fence around the outer edge of a rectangular garden plot that measures 25 feet by 45 feet. She will set p

Shalnov [3]

Answer:

Step-by-step explanation:

find perimeter (25 + 25 + 45 + 45 = 140)

divide your perimeter by 5 (140 ÷ 5 = 28)

therefore you need 28 fence posts

4 0

2 years ago

Your friend simplifies the following problem. Describe what error was made. No credit for just the correct final answer, we are

kenny6666 [7]

The error was made when he added the number in the radical expression in the computation, despite the fact that the numbers do not have the same base.

<h3>What are the radical expressions?</h3>

Any expression that contains a radical symbol is considered a radical expression. To find the square roots, cubic roots, and higher, radical symbols are used. For example, √7, √6, and √11 are in the radial form.

The expression is given in the question following:

4√5 + 7√3

11√8

The error was made in that he add the number in the radical expression in the calculation while the terms are not the same base.

Learn more about radical expressions here:

brainly.com/question/3796764

#SPJ1

5 0

10 months ago

Which equation represents a proportional relationship? A) y = 1/4 x B) y = 1/4 x + 1 C) y = 1/4 x + 4 D) y = 1/4 x + 1/4

AfilCa [17]

Answer:

That would be A

Step-by-step explanation:

y = 1/4 x

y is directly proportional to x.

6 0

3 years ago

Read 2 more answers