Question

Can someone help me with 7 and 8

y=8 and
X=1/4

Also can you help me with #9 thanks

Answer 1

7)

`(y)/(2x); if y=8,x=(1)/(4) \\\\(8)/(2*(1)/(4) ) =(8)/((1)/(2)) =8:(1)/(2) =8*2=16`

8)

`2(10-24x)+y^2; ify=8, x=(1)/(4) \\\\2(10-24*(1)/(4) )+8^2=2(10-6 )+8^2=\\=20-12+64=72`

9)

m-the number of months. So in 6 months the computer will be paid for

`25+10*6=25+60=85`

P.S. Hello from Russia

Answer 2

Explanation:

`7) \: (y)/(2x) = (8)/(2 * (1)/(4) ) = (8)/( (1)/(2) ) = 8 * 2 = 16 \\ \\ 8) \: 2(10 - 24x) + {y}^(2) \\ = 2(10 - 24 * (1)/(4) ) + {8}^(2) \\ = 2(10 - 6) + 64 \\ = 2 * 4 + 64 \\ = 8 + 64 \\ = 72`

9) Payment for m months = 25 + 10m

Hence, payment after 6 months

= 25+10*6 = 25 + 60 = 85

So, after 6 months you will have to pay $85 for your computer.