Which of the following are mathematical sentences? check all that apply. a. 4x b. r + 7 = 4 c. x = 1 d. 34 e. 5g = 9 f. 8r = 12

Mathematical sentences is also known as expression.

A:4x can be written as 4 times x.

So, 4x is a mathematical sentence.

B. r+7=4 is an equation so it's not an expression.

Similarly x=1, 5g=9 and 8r=12 all are equations.

So, the correct answer is A: 4x and D. 34.

answer: idk man i can't understand you could you translate

step-by-step explanation:

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.