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2 years ago

Given: 3x = 5 (x − 4) Prove: x = 10

Mathematics

1 answer:

damaskus [11]2 years ago

4 0

Answer:

see the procedure

Step-by-step explanation:

we have

$3x=5(x-4)$

step 1

$3x=5(x-4)$ ------> given problem

step 2

Applying the Distributive Property right side

$3x=5(x)-5(4)$

$3x=5x-20$

step 3

Applying the Subtraction Property of Equality

Subtract (3x-20) both sides

$3x-(3x-20)=5x-20-(3x-20)$

$20=2x$

step 4

Applying Division Property of Equality

Divide by 2 both sides

$20\2=x$

Rewrite

$x=10$

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2 years ago

The high school graduating class of 2010 was 260 people. Five years later the high school graduating class was 320 people. By ap

jeka94

Answer:

The high school graduating class changed by approximately 23%

Step-by-step explanation:

we have

The high school graduating class of 2010 was 260 people

Five years later the high school graduating class was 320 people.

we know that

260 people represent the 100%

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using proportion

Find out what percentage represent 60 people

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