The answer is 4. If you subtract 11 and 7, you would get 4. And if you want to check, you can add 7 and 4.
Wen you write in standard form, that means you're writing it in number form. For example, instead of writing "eighty-two", you'll write "82". ;-)
You line them up from smallest to greatest
Answer:
1436.76
Step-by-step explanation:
V=4
3πr3=4
3·π·73≈1436.75504
Answer:
The speed of the boat in still water is 10 miles / hour
Step-by-step explanation:
The trip there, and the trip back are the same -- 30 miles
Let the rate of the boat = x
Let the rate of the water = y
30 = 2*(x + y)
30 = 6*(x - y)
Divide the top equation by 2
Divide the bottom equation by 6
15 = x + y
<u>5 = x - y </u> Add the equations together.
20 = 2x Divide by 2
20/2 = x
x = 10