A carpenter is making one shelf that is 37.5 cm long and another that is 54.7 cm
long. How much wood does she need?

93 cm of wood

Step-by-step explanation:

when you add them together you get 92.2 cm long so I would guest you round it up to 93 cm long

let me know if i'm wrong

you add 37.5+54.7 =91.4

37.7

54.7

  9  1. 4

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional