Question

Help!! will give medal :)
the perimeter of a television screen is 150 inches. The ratio of the length to the width is 16 to 9. Find the length and width

Answer 1

perimeter of tv
2lngth+2height
we know
16/9 = length/height

Answer 2

and we know perimeter = 150

Answer 3

so
2l+2h=150
16/9 = l/h
solve the second equation for l and tell me what you have

Answer 4

it says width and not height?

Answer 5

correct so i would do 2(16)+2(9)=150??

Answer 6

no you need to solve for either l or h in the equation 16/9 = l/h
so
l = h(16/9)
now plug that in for l in the first equation
2(16/9) + 2h = 150

Answer 7

I should have used w not h, but its the same thing

Answer 8

is that 16 divided by 9 or do u mean pick eather 16 or 9

Answer 9

\[2\frac{16}{9}+2h=150\]

Answer 10

how do i type that into my calculator??

Answer 11

you have to isolate one of the variables and plug it into the other formula

2l+2h=150 ->l= 75-2h

16/9 = l/h -> 16/9=(75-2h)/h

Answer 12

the way I did it the first time

Answer 13

solve(2(16/9)+2x=150,x)

Answer 14

depending on the calculator
or
2(16/9) + 2h = 150
multiple everything by 9
32+18h = 1350
18h = 1350-32
18h = 1318
h=?

Answer 15

find h, then pluf that back into either equation to find l

Answer 16

pluf = plug

Answer 17

ok i think i got it thanks for the help :) ill let you kno what i get

Answer 18

i get 73.22 hight but would that be width @zzr0ck3r

Answer 19

then would i do 2(16/9)2(73.22)=150

Answer 20

no
2l+ 2(73.22) = 150
solve for l
or
16/9 = l/73.22
solve for l

Answer 21

i get 1.78 but that doesn't seem right

Answer 22

i did 2l+146.44=150
2l=3.56
l=1.78

Answer 23

@zzr0ck3r

Answer 24

16/9 = l/73.22
l = (73.22)(16/9)

Answer 25

I think you need to go back and work on algebra before you will be able to answer questions like this

Answer 26

this is my last class and i haven't taken algebra in 5 er 6 years