The frequency of A4 is 440 Hz.

What is the frequency of A2 which is two octaves below A4?

A. 110 Hz

B. 220 Hz

C. 880 Hz

D. 1760 Hz

Increase 140 bye 10%

An opaque bag contains 5 green marbles, 3 blue marbles, and 2 red marbles. If a marble is drawn at random what are the ODDS of drawing a red marble? A 1:2 B 1:4 C 1:5 D 4:5

All numbers less than 55 and greater than 45 in compact form

Taro has marbles whose total mass is 24g if each marble has a mass of about 1.5g how many marbles does taro have

the largest elephant weighs 30.25 times as much as the largest gorillas so if the largest elephant weighs 14,520 pounds how much do the largest gorillas weigh

How can a decimal be converted to percentage?

When you subtract one square number from the other the answer is 20. What are the two numbers?

Two angles form a linear pair. One angle measures 8 less than three times the other. Find the measures of the angles.

Three solid shapes, A B and C are similar. The surface area of shape A is 9cm² The surface area of shape B is 16cm² The ratio of the volume of shape B to shape C is 27:125 Work out the ratio of the height of shape A to shape B Give your answer in

Solve for x: x + 21 = 39 A. x = 23 B. x = 12 C. x = 18 D. x = 14