33%? since 15 girls have headphones and 10 boys have headphones which means theres 67% girls and 37% boys.
Answer:
8690
Step-by-step explanation:
.05*11=.55 so the percent is 55% and then 15800*55%=8690
Answer:
117 ft
Step-by-step explanation:
To find the area of any shape, just multiply height by width. In this problem, our given height is 9, and the given width is 13. We just need to do 9 x 13 to get a final area of 117 feet. The work can be seen down below!
9 x 13 = 117 ft
The answer is 4x10^14 because there are 14 zeros in front of the four thus you do 4x10^(number of zeros) and thus you get 4x10^14
Using the side of the square find the area:
Area = 30^2 = 900 square feet.
The rectangles area is the same, 900 square feet.
Let the width = X
The length would be 2X + 70
Area = length x width
X * 2x+ 70 = 900
This expands to 2x^2 * 70x = 900
Use the quadratic formula to solve for x:
-70 +/- sqrt(70^2-4*2(-900))/2*2
X = 10
Width = x = 10 feet
Length = 2x + 70 = 90 feet