200 children took part in a concert. There were 4 times as many girls as boys. How many girls were there?

7>-4; subtract 7 from both sides

What is the constant of proportionality for the ratio of the length of an arc and the radius? A Circumference B Length of radius C Length of subtended arc D Radian measure

What is the sum of the interior angles of a convex nonagon? 1620° 1800° 1260° 3240°

The green holiday lights blink every 8 seconds and the red holiday lights blink every 6 seconds. How many times will the lights blink at the same time in one minute?

Simplify 7 (x - 2) - 4x + 9

What is the distributive property of 12*12

15% of $17,500 9.5% of $15,000 11% of $18,050 10.5% of $21,000

You need to cover a section of floor in a hallway that is 31 inches wide by 9 ft long. How many square meters is this?

Find two positive numbers such that their product is 192 and their sum is a minimum without calculus

5 mile equals what in yards