Question

I need help with this stuff and i need the answers step by step thank you!!

Answer 1

2. A

3. C

4. B

Explanation:

2. To answer # 2, just add all the sides together...

(5x-7) + (3x-4) + (2x-6)

= 10x - 17

3. To answer # 3, divide/mulitply both the numerators and denominators by the same number and check to see if that answer matches the displayed answer...

a) 28 divided by 7 is 4, so divide the whole fraction by 7 to see if the fraction is proportional...

28/7 = 4

49/7 = 7

`(4)/(7) =(4)/(7)`

b) 4 goes into 16 4 times so multiply
`(4)/(7)` by 4...

4 x 4 = 16

7 x 4 = 28

`(16)/(28)` =
`(16)/(28)`

c) 4 goes into 16 4 times so multiply the whole fraction by 4...

4 x 4 = 16

7 x 4 = 28

`(16)/(28)` ≠
`(16)/(35)`

d) 4 goes into 20 5 times to multiply the whole fraction by 5...

4 x 5 = 20

7 x 5 = 35

`(20)/(35) = (20)/(35)`

C is the answer because the fractions are not proportional.

4) 25% is a quarter of 100%. A third of 100% is 75%.

$120 - 0.25($120) = $90

Another expression for the for sale price is...

B) 0.75($120) = $90