Answer:
B. 9
Step-by-step explanation:
So when solving a question like this, you may try to find what 3⁴ is and what 3² is and divide, but there is a much easier way to do this. Remember:
![\frac{a^{m}}{a^{n}}=a^{m-n}](https://tex.z-dn.net/?f=%5Cfrac%7Ba%5E%7Bm%7D%7D%7Ba%5E%7Bn%7D%7D%3Da%5E%7Bm-n%7D)
This can be used to find
without finding what 3⁴ is. This is how we would do it:
![\frac{3^{4}}{3^{2}}=3^{4-2}=3^{2}=9](https://tex.z-dn.net/?f=%5Cfrac%7B3%5E%7B4%7D%7D%7B3%5E%7B2%7D%7D%3D3%5E%7B4-2%7D%3D3%5E%7B2%7D%3D9)
And now we get the solution, 9, which is answer choice B.
I hope you find my answer helpful.
Answer:
it won't
Step-by-step explanation:
We assume the probability of heads for any (fair) coin is the same: 1/2. The kind of coin it is does not matter. That is, we assume the probability distribution of number of heads remains the same regardless of coin type.
94,78,62,46,30,14
This is correct because you need to subtract 94 and 78 and you get 16 which is the number you get from all of the pairs. Then you subtract 16 from 46 to get 30 and 16 from that to get 14.
Answer:
Simplifying
2(x + 10) + -17 = 5 + 2x + -2
Reorder the terms:
2(10 + x) + -17 = 5 + 2x + -2
(10 * 2 + x * 2) + -17 = 5 + 2x + -2
(20 + 2x) + -17 = 5 + 2x + -2
Reorder the terms:
20 + -17 + 2x = 5 + 2x + -2
Combine like terms: 20 + -17 = 3
3 + 2x = 5 + 2x + -2
Reorder the terms:
3 + 2x = 5 + -2 + 2x
Combine like terms: 5 + -2 = 3
3 + 2x = 3 + 2x
Add '-3' to each side of the equation.
3 + -3 + 2x = 3 + -3 + 2x
Combine like terms: 3 + -3 = 0
0 + 2x = 3 + -3 + 2x
2x = 3 + -3 + 2x
Combine like terms: 3 + -3 = 0
2x = 0 + 2x
2x = 2x
Add '-2x' to each side of the equation.
2x + -2x = 2x + -2x
Combine like terms: 2x + -2x = 0
0 = 2x + -2x
Combine like terms: 2x + -2x = 0
0 = 0
Solving 0=0