Y = kx
80 = 16k
k = 80/16 = 5
direct variation
The first 2 choices are corect
Answer:
x=11
Step-by-step explanation:
4x+11=5x (angle adb and edf are the same)
11=5x-4x
11=x
x=11
if you want you can check by doing...
(14*11-29)+(5*11)=180
Answer:
The depth of the lake last year was 52 feet
Step-by-step explanation:
Given as :
This year depth of lake = 39 feet
Let the last year depth of lake = x feet
Now,
According to question :
The depth this year is 25% less than that of last year
I.e 39 feet = x - 25% of x
Or, 39 feet =
or, x =
∴ x = 52 feet
Hence The depth of the lake last year was 52 feet Answer
Answer:
37.5 %
Step-by-step explanation:
11/8 = 1.375
1.375 x 100 = 137.5 %
137.5% - 100% = 37.5%