Answer:
Step-by-step explanation:
The most important part of this question is the estimation. That means you round either up or down to get whole numbers.
You can make - 37.44 either - 40 or - 35
You can make 4.8 into 5
So the answer should lie between -40/5 = - 8
or
The answer should be between - 35/5 = - 7
Use your calculator to check it.
-37.44 ÷ 4.8 = - 7.8
This skill is very handy when shopping or writing a test. It you get an outrageous answer like - 21.44 you know you have done something wrong.
Radius = 100m
Circumference of a circle = 2πr
= 2 × π× 100
=628.31m
Answer:
9
Step-by-step explanation:
The whole line is 180 degrees. First, you have to set up an equation. This equation would be 3x+94+x+36+2x-4=180. You can then combine like terms. The equation would now be 6x+126=180. Then subtract 126 from both sides of the equation. This would give you 6x=54. Divide 6x on both sides. The answer is 9.
Y+x=31, 150x+225y=5100.
y=-x+31
150x+225(-x+31)=5100
-75x=-1875
x=25 (adult tickets are $25)
31-25= 6 (child tickets are $6)
Calculating the volume of a cylinder the radius is squared,
If the radius was 8 when 8 is squared you get 64
If the radius is multiplied by 1/2 the radius would become 4, 4 squared is 16
16 / 64 = 1/4
The volume would be 1/4 the original volume, so it would be 4 times smaller.
