Let the width be x m, then the length is 2x-7 m.
If the length is decreased by 1m, then new length is 2x-7-1=2x-8 m.
If the width is decreased by 4 m, then new width is x-4 m.
Find the perimeter of new recangle:
The perimeter of new rectangle is 66 m, then
Therefore, old width was 15 metres and old length was 2·15-7=23 metres.
Answer: original width: 15 metres, original length: 23 metres
Answer:
V = 577 cubic cm
Step-by-step explanation:
V(cyl) = Area of Base x Height
Area of Base = πr²
r = 7/2 or 3.5
h = 15
V = π(3.5)²(15)
V = 577
Answer:
The speed of sound is 2.23 times of the speed of race car
Step-by-step explanation:
Given that,
The speed of a race car =
The speed of sound =
Dividing the speed of sound to the speed of a race car. So,
So, the speed of sound is 2.23 times of the speed of race car.
Answer:
(C) $1.12
Step-by-step explanation:
Multiply .75 by 7 to get the total pen cost. Then subtract that from $9.73 to get the total pencil cost, which is $4.48. Then divide by 4 since that is the amount of pencils.
Hope this helps
Well not 100% about this math problem however you can probably simplify on http://m.graph-inequality.com/simplify-expression