Which is the value of this expression when a=5 and k=-2? ?K
325-2
3a7
75
9
25.
25
19
10 75

Answers

Answer 1

Answer:

Hey there! I'm happy to help!

$a^-^2$ is the same thing as 1/a². So, $5^-^2$ is 1/25. This is multiplied by 3² which is 9, so this is 9/25.

In the denominator, we have $5^-^1$ , which is 1/5. We multiply this by 3, which is 3/5.

So, we divide 9/25 by 3/5, giving us 3/5.

Now, we raise this to the power of -2, so we flip the numerator and denominator and then square both numbers, giving us 25/9.

Have a wonderful day! :D

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What is the total area of the figure below

Answers

The area of the given figure is 165 square in.

What is trapezoid?

A closed polygon or geometry with four sides, four corners, and four angles is called a trapezium. Each pair of a trapezium's opposing sides is parallel to the other.

In the given figure,

Trapezium and triangle are shown.

The length of parallel sides of trapezium,

a = 16 in and b = 10 in.

And the height of trapezium 9 in.

Also given, the base of triangle = 6 in,

And height of triangle = 8 in.

The area of trapezium = 1/2(a + b)h

= 1/2 (16 + 10) x 9

= 1/2 x 26 x 9

= 13 x 9

= 117 square in.

The area of triangle = base x height = 8 x 6 = 48 square in.

Total area of figure = Area of trapezium + Area of triangle
= 117 + 48 = 165

The required area of figure is 165 square in.

To know more about Trapezoid on:

brainly.com/question/29134053

#SPJ2

Answer:

141 square inches

Step-by-step explanation:

Bryce wrote the linear regression equation y=1.123x-6.443 to predict the armspan, y, of a person who is x inches tall. Riley has an armspan of 67.5 inches. Which is the best prediction of Riley’s height? A. 54.36 inches
B. 65.84 inches
C. 66.55 inches
D. 69.36 inches

Answers

Answer:

B. 65.84

Step-by-step explanation:

You are given the armspan and a relation between that and height. Put the given value in the equation and solve for the unknown.

... 67.5 = 1.123x -6.443

... 73.943 = 1.123x

... 73.943/1.123 = x = 65.84

Riley's height is predicted to be 65.84 inches.

which of the following statistic measures the most frequently occuring value in a set of data A.) range B.) mean C.) mode D.) median

Answers

Answer:

This is mode defined

Step-by-step explanation:

Which cannot be the angle measurements of triangle ABC? OmZA = 55°, mZB = 65°, mZC = 60° OmZA = 60°, mZB = 60°, mC = 60°
MZA= 57°, MZB = 58°, mZC = 65°
MZA = 61°, mZB = 57°, mZC = 61°

Answers

Answer:

D. m<A = 61°, m<B = 57°, m<C = 61°

Step-by-step explanation:

The sum of all interior angles of a triangle is always equal to 180°.

Therefore, any set of given angle measurement of a triangle should sum up to 180°.

From the options given, the following angle measurements given in option D,

,m<A = 61°, m<B = 57°, m<C = 61° cannot be angle measurements of ∆ABC. This is because they sum up to give 179° instead of 180°.

Answer:

The answer is D

Credits to the person above me.

; )

Step-by-step explanation:

EDGE 2021

Christine is fertilizing her garden. the garden is in the shape of a rectangle. its length is 12 ft and it's width is 10 feet. suppose each bag of fertilizer covers 30 square feet. how many bags will she need to cover the garden?

Answers

Answer:

Step-by-step explanation:

First we need to find the total area of the garden so we can see how many bags she will need. The area of a rectangle is its length multiplied by its width, so the area of her garden is 12 (the length) x 10 (the width). 12 x 10 = 120 square feet. If each bag covers 30 square feet, then she will need 120/30 = 4.

4 bags of fertilizer to cover the 120 square feet of the garden area.

Hope this helped!

Deanna and Lise are playing game at the arcade. Deanna started with $20 and the the game she is playing costs $0.25 each game. Lise started with $40, and her machine costs $0.75 per game. How many games will it be before they both have the same amount of money left? Make an expression the solves the problem.

Answers

Deanna 78 games 19.50

Lisa 26 games 19.50

Hope that helps..

Final answer:

To determine how many games it will take for Deanna and Lise to have the same amount of money left, set up an equation using their net losses per game and solve for 'g'. It will take 40 games for them to have the same amount of money left.

Explanation:

To determine how many games it will take for Deanna and Lise to have the same amount of money left, we need to set up an equation. Let's start by determining their net loss per game by subtracting the cost of each game from their initial amount of money. For Deanna, her net loss per game is $0.25. For Lise, her net loss per game is $0.75.

Let's represent the number of games they play with the variable 'g'. To find the number of games it will take for them to have the same amount of money left, we need to set up an equation. Deanna's remaining money after 'g' games can be represented as $20 - $0.25g. Lise's remaining money after 'g' games can be represented as $40 - $0.75g.

Setting the two expressions equal to each other, we can solve for 'g':

$20 - $0.25g = $40 - $0.75g

$20 = $40 - $0.5g

$0.5g = $20

g = $20 / $0.5 = 40

Therefore, it will take 40 games before Deanna and Lise have the same amount of money left.

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