Answer:
4a=23
4a/4 = 23/4
a=5.75
Step-by-step explanation:
-y = -x + 16
y = x - 16
Slope = 1
9514 1404 393
Answer:
C, D
Step-by-step explanation:
The applicable rules of exponents are ...
(a^b)(a^c) = a^(b+c)
__
The correct equations are the last two.
For the first two, the appropriate products are ...

The answer is D. Because you need to add not subtract.
Using the Pythargorean theoem
a^2 + b^2 = c^2
2^2 + 2^2 = c^2
4 + 4 = c^2
8 = c^2
c = sqrt(8)
the answer would be D