The square root of 81 is 9

Distribute 3 throught the parentheses

Move the variable to the left-hand side and change its sign

Move the constant to the right-hand side and change its sign

Collect like terms

Divide both sides of the equation by -3

Yes, she is correct
1/2 + 1/2 = 1 or 0.5 + 0.5 = 1 so half of a wall plus half of a wall equals one hole wall.
That's as simple as I can put it mathematical reasoning. I hope this helps
Answer:
219
Step-by-step explanation:
he will still need 219 dollars to get to 948
Answer:
She will save $5.25
Step-by-step explanation:
21 x 25% = 5.25