Answer: 8 years
Step-by-step explanation:
You can find this out use the Rule of 72. By dividing 72 by the fixed interest rate, you can estimate the amount of time it will take for an investment to double in size:
= 72/10
= 7.2 years
= 8 complete years
Example:
Assume they invested $1,000. Interest rate is 10%.
Amount after 8 years will be:
= 1,000 * (1 + 10%)⁸
=$2,143.59
<em>Investment is now more than double. </em>
Make the equation into slope intercept form: y = mx + b
2x + y = 10
Subtract 2x
y = -2x + 10
Parallel means same slope
Y = -2x + b
Plug in the point (1,5)
5 = -2(1) + b, b = 7
Solution: y = -2x + 7
First let's review the area formula for a circle.
Area=π
Now that we know the radius, r is 10. The area is
10*10*π=100π
I will approximate π to 3.14 although you could do it more precise or less precise. The final answer will be 100*3.14=314 squared centimeter.
Any question you have about this just ask in the comment of this answer :)
Answer:
Squirrel will take 0.25 hours or 15 minutes
Step-by-step explanation:
Given:
Maximum speed of squirrel = 12 miles/hour
Distance to be covered = 3 miles
To Find:
Time taken to cover the distance = ?
Solution:
We are given the distance and speed of the squirrel and we have to find the time taken by the squirrel
We are given the formula for distance
Distance = speed * time
Now to we have the values
putting in the values
3 = 12 * time
dividing both sides by 12

0.25 hours = time
as one hour = 60 minutes
so
time = 0.25 * 60 minutes
time = 15 minutes
Squirrel will take 0.25 hours or 15 minutes