Answer:
30 ≥
Step-by-step explanation:
6 ≥ 1/2x + 21
-6 -6
1/2x ≥ 15
15/1 x 2/1 = 30/1
answer: 30
you keep the sign the same because you only flip the sign if you multiply or divide by a negative number
Answer:820
Step-by-step explanation:
Since he got $500 the first week multiply 80x4 which is 320+500 is 820$
Answer:
Step-by-step explanation:
9/n = 3/4 Cross Multiply
3n = 36 Divide by 3
n = 36/3
n = 12
Answer:
726
Step-by-step explanation:
You multiply the base and the height (11x11) and multiply THAT by 6 because there are 6 faces on a cube.
I think the answer is (7x-3)(7x+3)