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ira [324]
3 years ago
14

Simplify (2^3)^–2. A: -1/64 B: 1/64 C: 2 D: 64

Mathematics
1 answer:
lions [1.4K]3 years ago
5 0

Answer:

B: 1/64

Step-by-step explanation:

2^3 = 8

8^(-2)=1/(8^2)=1/64

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Find z such that 97.5% of the standard normal curve lies to the left of z. (Enter a number. Round your answer to two decimal pla
fomenos

Answer:

z=1.96

Step-by-step explanation:

Using normal distribution table or technology, 97.5% corresponds to z=1.959964, generally denoted z=1.96, or 1.96 standard deviations above the mean.

(above value obtained from R)

6 0
3 years ago
What is the measure of angle B in degrees?
Kamila [148]

Answer:

119°

Step-by-step explanation:

51+180-112= 119°

------

8 0
3 years ago
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If 2k, 5k-1 and 6k+2 are the first 3 terms of an arithmetic sequence, find k and the 8th term.
Simora [160]
Consecutive terms in an arithmetic sequence differ by a constant d. So

5k-1=2k+d
6k+2=5k-1+d
\implies\begin{cases}3k-d=1\\k-d=-3\end{cases}\implies k=2,d=5

Denote the n-th term in the sequence by a_n. Now that a_1=2, we have

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which means

a_8=2+(8-1)\cdot5=37
4 0
3 years ago
Find the perimeter of a square with sides of 61 +5.
KATRIN_1 [288]

Answer:

264

Step-by-step explanation:

the perimeter of a square with sides of 61+5 is 264

6 0
3 years ago
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Write an equivalent expression for 4 + 2 using the Distributive Property.
My name is Ann [436]
Looking at the choices i believe you need a g in your question. If it is 4g+2
Then you factor out at 2 to get 2(2g+1) choice a
If it 4+2g then you also factor out a 2 but this time get 2(2+g) choice b
Depending on what the question actually is those would be the answers
3 0
3 years ago
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