$64\ \frac{mile}{hour}=x\frac{feet}{second}\\\\
Converting\ unites:\\
1\ mile= 5280\ feet\\
1\ hour=\ 3600\ second\\\\
64\frac{mile}{hour}=64*\frac{5280feet}{3600second}=\frac{33792\ feet}{3600\ second}=93,9\frac{feet}{second}$

6 0

2 years ago

The length of a rectangle is 2 cm longer than its width if the perimetier of the rectangle is 44cm, find its area

Natasha2012 [34]

L=w+2 and 2w+2l=44

substitute equation for length in perimeter equation

2w+2(w+2)=44
2w+2w+4=44
4w+4=44
4w=40
w=10

substitute width into length equation to get length

l=10+2
l=12

a=lw
a=12*10
a=120 cm^2

7 0

2 years ago

3.868×10 9 =? <br> What is this answer?

viktelen [127]

The answer is 421.612

4 0

2 years ago

Need answer!! please help.

defon

Answer:

I think A

Step-by-step explanation:

8 0

2 years ago