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3 years ago

Can somebody pls show me how to solve this?

Mathematics

1 answer:

fomenos3 years ago

8 0

Answer:

C. 52.5

Step-by-step explanation:

The total from W(-20) to Z(120) is 140.

You can add up all of the numbers in the ratio, 2:3:3, to get 8

Divide 140 by 8 to get 17.5

Multiply 17.5 times the number in the ratio for each segment, so the new ratio would be 35 : 52.5 : 52.5

Since you are trying to find segment XY, which was the 2nd number in the ratio, you would get your answer as 52.5

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When x = 2, what is the value of the expression 5x^2 - 4?

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The value of the expression, 5x^2 - 4, when x = 2 is: 16.

<h3>What is the the Value of an Expression?</h3>

To find the value of an expression, plug in the given value of the variable and solve by simplifying.

Given the expression, 5x^2 - 4, when x = 2, we would have:

5(2)^2 - 4

5(4) - 4

20 - 4

= 16

Therefore, the value of the expression, 5x^2 - 4, when x = 2 is: 16.

Learn more about value of expression on:

brainly.com/question/625174

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A pair of rollerblades is on sale for 35% off the original price. If the original price is $128.40, what is the sale price?

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Hi plz help me I will also do them just to make sure :)

fomenos

Answer:

1) C - The estimate of the product is 10

2) A - The estimate of the product is 20

3) A - The estimate of the product is 20 (It is the same question as #2^)

4) A - The estimate of the product is 9

5) B - The product of the product of 7

Step-by-step explanation:

Hope it Helps!

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What are the solution(s) of -3(x - 1) = x - 5? O-5 and 3 O-3 O1 and 5 O 2

andre [41]

Answer:

x = 2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Step-by-step explanation:

Step 1: Define equation

-3(x - 1) = x - 5

Step 2: Solve for x

Distribute -3: -3x + 3 = x - 5
Add 3x to both sides: 3 = 4x - 5
Add 5 to both sides: 8 = 4x
Divide 4 on both sides: 2 = x
Rewrite: x = 2

Step 3: Check

Plug in x to verify it's a solution.

Substitute: -3(2 - 1) = 2 - 5
Subtract: -3(1) = -3
Multiply: -3 = -3

Here we see that -3 does indeed equal -3.

∴ x = 2 is a solution of the equation.

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