Answer:
a² and 2a² are like terms.
Step-by-step explanation:
They both have the same variable, and the same exponent.
Answer:
Step-by-step explanation:
r = -7.714285714
Answer:
30 years old
Step-by-step explanation:
Let the two ages be A and C.
Then C = (1/2)A, and A = C + 15.
Substitute C + 15 for A in C = (1/2)A:
C = (1/2)(C + 15), or 2C = C + 15.
Then C = 15, and A = C + 15 becomes A = 15 + 15, or A = 30.
Answer:
-0.5
Step-by-step explanation:
Answer:
The slope is a) -5.
Step-by-step explanation:
(-6, -4)
(-5, -9)
the difference in slope is