Which statement about sound is true because it is a mechanical wave?

It can travel through the vacuum of space.

It must travel through a medium.

o

It can travel only through air.

o It cannot travel through a medium.

Order each set least to greatest 0.4,5/8,38%

12-2 to the second power : 5 how can i get this to equal 20

Evan bought two plants. He decided to water his first plant every 3 days and his second plant every 4 days. A. If he watered both plants on june 1, how many days passed before he watered both plants on the same day again? Show or explain your work B.

Name all the sets of numbers the number 8 belongs to

What is the value of 3 - 6 (Z - 2) ^3 if Z equals - 2 what is the value

Write the fraction in simplest form 25/100

A store has apples on sale for $5.00 for 2 pounds. If an apple is approximately 5 ounces, how many apples can you buy for $30.00? Complete the explanation. The cost per pound of the apples on sale is $. You can buy pounds of apples for $30.00.

What is the exact solutions of x2=5x+2

Which expression represents a negative number? a. 0.25 2.7 b.-0.25 2.7 c.-2.7 (-0.25) d.-0.25 (-2.7)

What is the factorization of the expression below? 4x2-9y2