Answer:
If we know that 2 angles are complements of each other, then they add up to 90 degrees. Knowing this, if we know that the complement of an angle X has an angle value that is 3 times greater, we can write that as such: X + 3X = 90 => 4X = 90. We solve for X to get: 22.5 degrees.
Step-by-step explanation:
Answer:
44
Step-by-step explanation:
The formula to find to area of a circle is 
= Area
The perimiter formula is 
= Perimeter
Since we know the area (154cm) we can find the radius (r) with the formula.
You first have to find what the radius of the circle is with.
= 154
3.14
=154
Now simplify.
=49 (rounded)
r=7
Now we can find the perimeter with the formula above.
= P
Now plug in.
2(3.14)(7)= P
44=P (Rounded)
Answer:
It was a 270% markup. Divide the two to get 2.7, which, in percentage form would be 270%
In 2 hours they rest for 16 minutes.
So first we should work out how long they rested for in 1 hour.
We do this by simply doing 16 (minutes of rest) divided by 2 (hours of dancing):
16 / 2 = 8
In one hour of dancing they rest for 8 minutes.
Now to work out how long they rested in 3 hours, we simply do 3 (hours of dancing) x 8 (minutes of rest per hour):
3 x 8 = 24
The couple spent 24 minutes resting in 3 hours of dancing.
