Witch ones are mathematical sentences?

5g=9

4x

8r=12

R+7=4

34

X=1

What are the partial products of 42 x 28.

What does it mean for a variable to have coefficients that are equal but opposite

The set of all possible outcomes of a probability experiment is called the

12y+5-34y=0 What is y

How many different committees can be formed from 11 teachers and 49 students if the committee consists of 2 teachers and 4 students?

Absolute value of - 1 + 3i

Round 64,569 to the thousands

Keenan received two cube shape packages in the mail. The first package measured half the side lengths of the first. What was the volume of the second package Keenan received?

Dan was 8 years old when his sister was born. Now the sum of their ages is 56. Write an equation to represent this problem. Let the sister's age be s.

9 into 780 the problem has been stated for you