Answer: 4 hours
Make a number line and put up to 5 hours going both directions. one direction will be shanice, the other lisa. youll skip an hour for lisa. so shanice will arrive at 350km and lisa will get to 220km at the five hour mark. It’s a lot simpler then doing the actual math.
Ok so for area you multiply the length by the width and for perimeter you just add them.. hope this helps!!
Answer:
56 because you have to multiply 28 times 2
Answer:
x = -7 and x = 5
Step-by-step explanation:
factor
(x +7) (x -5)
set each to 0
Answer:
125 times larger
Step-by-step explanation:
Let's say the radius is 3, just as an example.
The formula of a sphere is V=4/3 pi r^3
Then we can just substitute and test it out.
V=4/3 pi (3)^3
V=4/3 pi (27)
V=36 pi
Then multiple the previous radius by 5 to test it out.
V=4/3 pi (15)^3
V=4/3 pi (3375)
V=4500 pi
Then divide the bigger one by the smaller one
You will get 125, therefore it is 125 times larger
hope this helps :D