Answer:
25x³-15x²
Step-by-step explanation:
multiplying,
5x² ×2x = 25x³
5x² × 3 = 15x²
25x³- 15x²
The answer is 0.79g/cm^2
Density is just mass divided by volume.
So it was 150/189
Answer:
r = -189
Step-by-step explanation:
-13 - 8 = r/9
- 21 = r/9
r = 9 * -21
r = -189
Answer:
-75 and -77
Step-by-step explanation:
This can be wrote as 
. Combine like terms and subtract 2 from both sides to get 
. Divide by two to get 
and then add two to get -75.
