Answer:
-a-3b
Step-by-step explanation:
a+2b-2a-b+2(-2b)
-a+b-4b
-a-3b
-(a+3b)
Answer:
s < 8
Step-by-step explanation:
7−s/2>3
Subtract 7 from each side
7-7−s/2>3-7
-s/2 > -4
Multiply each side by -2. Remember to flip the inequality since we are multiplying by a negative.
-s/2 * -2 < -4*-2
s < 8
Answer:
R = 4cm
Step-by-step explanation:
V = π(R)²h = 480π
Divide by π
(R)²h = 480
Substitute h with 30
30*(R)² = 480
Divide by 30
(R)² = 16
Square root
R = 4cm
We do not accept R= -4 because it's a length, so it must be positive.
