Answer:
1st answer
Step-by-step explanation:
D=4(9-c) and d=2(9+c)
d=36-4c and d=18+2c
Since d=d
18+2c=36-4c add 4c to both sides
18+6c=36 subtract 18 from both sides
6c=18 divide both sides by 6
c=3
So the speed of the current is 3mph
Answer:
308 m^3
Step-by-step explanation:
The volume is given by
V = l*w*h where l is the length , w is the width and h is the height
V = 7*4*11
V = 308 m^3
Answer:
B. 3 / (x+6)
Step-by-step explanation:
3(x+2)/(x+6)(x+2) = 3 / (x+6)
Jessie = Todd + 6
Todd = Ryan -2
if Ryan = r
so Todd = r-2
then Jessie = (r-2) + 6 = r-4 years old
