Answer: is it 8
Step-by-step explanation: i just guess the middle number
Answer:
x = -2
Step-by-step explanation:
2x + 4 = 0
2x= -4
x=-2
Answer:
Step-by-step explanation:
When equal bases are multiplied, the powers add.
The bases of both expressions is x.
The powers are 5 and 7.
The answer is x^(5 + 7) = x^(12)
Answer:

Step-by-step explanation:

4/7 × 3/4
(4 and 4 are cancelled )
7×3
the answer is 21