The answer is 156 when I added all the amounts up
Answer:
b
Step-by-step explanation:
(√2 + √3)(√5 - √7) = √10 - √14 + √15 - √21
No i dont think so but i could be wrong i will double check to be sure though
The answer should be 390=60s, assuming s is the number of shelves he would need.
By the way, if you want the answer using this formula:
390=60s
390/60=s
6.5=s
s=6.5
Set up a proportion: 25/100 = 50/n where n = # of teens surveyed
Simplify fraction: 1/4 = 50/n
Cross multiply: n = 200
So 200 teens were surveyed.
