2x+5=12
Subtract 5 from both sides
=2x=7
Divide by 2
X=2/7
Answer:
200.96
Step-by-step explanation:
64x3.14=200.96
Answer:
4 [miles].
Step-by-step explanation:
1) the condition 'the entire trip took 5 hours' can be written as (where t_us - time spent upstream, t_ds - time spent downstream)

2) but the distance [D] upstream is equal the distance downstream, then the condition above can be written:

3) finally,

D=5*4/5=4 [miles].
Pi*r^2
3.14*7000^2
153,860,000