A board 120 inches long is divided into 2 sections if the ratio of the 2 sections is 3 : 5 what are the lengths of the sections

The ratio of 2:3 means total length will be 2 parts + 3 parts i.e. total 5 parts .

Now 5th part of 90 cm will be 90/5= 18 cm ,

2 x 18 = 36 cm the length of shorter length

similarly

3 x 18 = 54 cm the length of longer part.

in total 36+54= 90.

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

10 b/c 5*2 =10

step-by-step explanation: