Adding which terms to 3x2y would result in a monomial? Check all that apply.

3x2y + 3xy (cannot be added)

3x2y + (–12x2y) = -9x2y  

3x2y + 2x2y2 (cannot be added)

3x2y + 7xy2 (cannot be added)

3x2y + (–10x2) (cannot be added)

3x2y + 4x2y = 7x2y

3x2y + 3x3 (cannot be added)

Step-by-step explanation:

Adding and subtracting a monomial requires having the same variables. No matter how big or small their coefficient is, if their variables do not match, they cannot be added or subtracted. The crucial part in adding or subtracting monomials is their sign. If the signs are the same, retain the sign. If the signs are different, subtract and keep the sign of the larger number.

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*