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KIM [24]
4 years ago
14

When olivia started a business the amount of profit she had was -$1550 during the first six months, her profit increase by $250

each month what was the amount of olivia's profit at the end of the first six months?
Mathematics
1 answer:
Llana [10]4 years ago
4 0
She is still in debt by $50 by the end of six months. -1550+250=-1300+250=-1050+250=-800+250=-550+250=-300+250=-50
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What is the answer to 5x=3x-8
miv72 [106K]

Answer:

x=-4

Step-by-step explanation:

5x=3x-8 you subtract 3x from both sides.

2x=-8 then you divide by the number next to the x. meaning 2

x=-4

4 0
3 years ago
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A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. He wants to construct the 95
Galina-37 [17]

Answer:

The minimum sample size required for the estimate is 345.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.025 = 0.975, so Z = 1.96.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

The standard deviation is known to be 1.8.

This means that \sigma = 1.8

What is the minimum sample size required for the estimate?

This is n for which M = 0.19. So

M = z\frac{\sigma}{\sqrt{n}}

0.19 = 1.96\frac{1.8}{\sqrt{n}}

0.19\sqrt{n} = 1.96*1.8

\sqrt{n} = \frac{1.96*1.8}{0.19}

(\sqrt{n})^2 = (\frac{1.96*1.8}{0.19})^2

n = 344.8

Rounding up to the next integer:

The minimum sample size required for the estimate is 345.

8 0
3 years ago
True or false? The sum of the exterior angles depends on how many sides there are in the polygon?
kap26 [50]

Answer: true i believe

Step-by-step explanation:

8 0
3 years ago
0.4 times 2.72=<br> I don’t know how I’m getting it wrong
gayaneshka [121]

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4 years ago
What is the sum of the first nine terms of this Sequence if the first term is 0?
Harlamova29_29 [7]

Answer:

D. 160

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Here, you have the sum of 4(1, 2, 3, 4, ... , n), so the sum is 4[n(n + 1)/2]

In this case, the first term is 0, so the last term is the 8th term of the sequence above, so n = 8

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The closest answer is D. 160

8 0
3 years ago
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