Answer: B
Step-by-step explanation: B
Answer:
8 feet
Step-by-step explanation:
Let l and w be length and width, respectively. Then:
lw=144 and
l=w+10
So:
w(w+10)=144
w²+10w-144=0
(w+18)(w-8)=0
w=8 as the width ................
Answer:
x=3.5
Step-by-step explanation:
4 times 7 = 28
3 times 7 = 21
It will take him 21 days to make 28 bird houses.
Answer:
1155
Step-by-step explanation:
let the ratio be 4x:11x
4x=420
x=105
11x=11*105
=1155
