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prohojiy [21]
3 years ago
7

7 times a number is 8 less than the square of that number. Find the negative solution.

Mathematics
1 answer:
kap26 [50]3 years ago
8 0

Answer:

Step-by-step explanation:

x^2-8x+x-8

x(x-8)+1(x-8)

(x+1)(x-8)

The negative number is x=-1

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Answer: 0.6812

Step-by-step explanation:

Let p be the population proportion of trees are infested by a bark beetle.

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Sample size : n= 1000

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Sample proportion of trees are infested by a bark beetle. = \hat{p}=\dfrac{127}{1000}=0.127

Now, the z-test statistic : z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

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3 years ago
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3 years ago
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Jane brought x shirts for $20 each and y skirts for $25 each she spent $210 in all. which equation represents this situation 2
miv72 [106K]

Answer:

Part A

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4 0
2 years ago
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