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Svetlanka [38]
3 years ago
11

Steps for solving 5(2x - 8) = 20 are shown.

Mathematics
1 answer:
kykrilka [37]3 years ago
3 0
Answer: D. Using the commutative property

explanation: you use the distributive property to get 10x-40. to combine like terms you add 40 to -40 and 20. and you decide 10 by both sides to get x by itself and the answer on the other side which equals 6.
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If you take a number, times by 8 then add 6. You get the same as if you took the number multiply it by 3 then subtract 7. What i
Gennadij [26K]

Answer:

x = -13/5

Step-by-step explanation:

let x be the number

8x + 6 = 3x - 7

move variables to left and numbers to right

8x - 3x = - 7 -6

5x = -13

x = -13/5

4 0
3 years ago
"is it appropriate to use the normal approximation for the sampling distribution of"
Katyanochek1 [597]

Answer: Normal approximation can be used for discrete sampling distributions, such as Binomial distribution and Poisson distribution if certain conditions are met.

Step-by-step explanation: We will give conditions under which the Binomial and Poisson distribitions, which are discrete, can be approximated by the Normal distribution. This procedure is called normal approximation.

1. Binomial distribution: Let the sampling distribution be the binomial distribution B(n,p), where n is the number of trials and p is the probability of success. It can be approximated by the Normal distribution with the mean of np and the variance of np(1-p), denoted by N(np,np(1-p)) if the following condition is met:

n>9\left(\frac{1-p}{p}\right)\text{ and } n>9\left(\frac{p}{1-p}\right)

2. Poisson distribution: Let the sampling distribution be the Poisson distribution P(\lambda) where \lambda is its mean. It can be approximated by the Normal distribution with the mean \lambda and the variance \lambda, denoted by N(\lambda,\lambda) when \lambda is large enough, say \lambda>1000 (however, different sources may give different lower value for \lambda but the greater it is, the better the approximation).

5 0
3 years ago
4. In this figure, B↔A↔
LenaWriter [7]

Answer:

B. 25 degrees

Step-by-step explanation:

i think

6 0
3 years ago
=<br> Given f(x) 2x3 + kx + 6, and x + 2 is<br> a factor of f(x), then what is the value of k?
FinnZ [79.3K]

Answer:

Look

Step-by-step explanation:

best solution is ask ur mom

7 0
2 years ago
How is the value of 4 in 864 related to the value of 4 in 846
frez [133]
In 864 it is a tenth as large... Hope that helped lol i'm not completely sure. I did it in my head.
5 0
3 years ago
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