$(a\cdot b)^n=a^n\cdot b^n\\(a^n)^m=a^{n\cdot m}\\\\(5^{-2}\cdot4^{-4})^{-2}=(5^{-2})^{-2}\cdot(4^{-4})^{-2}=5^{-2\cdot(-2)}\cdot4^{-4\cdot(-2)}\\\\=\boxed{5^4\cdot4^8}\to\fbox{A.}$

6 0

3 years ago

Read 2 more answers

Carla runs four miles every day. She jogs from home to the school track, which is 3/4 mile away. Then she runs laps around the 1

Juli2301 [7.4K]

3/4(2) + 1/4x = 4
1 1/2 + 1/4x = 4
-1 1/2 -1 1/2
1/4x = 2 1/2
----- ------
1/4 1/4
x= 10 laps

5 0

3 years ago

7. The rectangle below is dilated by a scale factor of

tino4ka555 [31]

Answer:

i dont know

Step-by-step explanation:

i dont know

5 0

3 years ago

Please help thank you.

miv72 [106K]

Hello!

All lines within a circle are the same length

We first have to find the length of one of the lines.

7 + 4 = 11

Now we find what we are missing from the second line

5 + z = 11

z = 6

The answer is C)6

Hope this helps!

4 0

3 years ago