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tatyana61 [14]
3 years ago
5

Jonathan bought a table and some chairs at a furniture store. The equation that models this situation is y=25x+80, where y is th

e amount of money he spent and x is the number of chairs he bought.
What does the y-intercept mean in this solution?

A. He paid $25 for the table.
B. He paid $80 for the table.
C. He paid $25 for each chair.
D. He paid $80 for each chair.
Mathematics
2 answers:
Pachacha [2.7K]3 years ago
3 0
We have to look at what the y and x mean. X is the number of chairs while y is the amount of money. Since chairs cost $25, since the chairs is multiplied by it, the chairs have to be 80 since he only bought one table.
B. He paid $80 for the table.
Nimfa-mama [501]3 years ago
3 0
He paid 80 for the table give me the brainliest
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Answer:

$679.4

Step-by-step explanation:

commision: $249.4

earnings: $430

$249.4 + $430 = $679.4

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how to solve this prroblem by marianne buys 16 bags of potting soil that come in 5÷8_pound bags .how many pounds of potting soil
barxatty [35]
So, she buys 16 bags, each of them weights\frac{5}{8} pounds.

to find how many pounds of soil she bought, we have to multiply:

16*\frac{5}{8}=//16 is equal to 8*2, so we can simpify:
2*\frac{5}{1}

which is 2*5=10

so in the end she bought 10 pounds of soil!

3 0
3 years ago
There are 2,000 eligible voters in a precinct. A total of 500 voters are randomly selected and asked whether they plan to vote f
Ann [662]

Answer:

0.7 - 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.647

0.7 + 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.753

And the 99% confidence interval would be given (0.647;0.753).

So the correct answer would be:

a. 0.647 and 0.753

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Solution to the problem

The estimated population proportion for this case is:

\hat p = \frac{350}{500}=0.7

The confidence interval would be given by this formula

\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}

For the 99% confidence interval the value of \alpha=1-0.99=0.01 and \alpha/2=0.005, with that value we can find the quantile required for the interval in the normal standard distribution.

z_{\alpha/2}=2.58

And replacing into the confidence interval formula we got:

0.7 - 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.647

0.7 + 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.753

And the 99% confidence interval would be given (0.647;0.753).

So the correct answer would be:

a. 0.647 and 0.753

7 0
3 years ago
Describe a real world situation that can be represented by the quotient negative 85 divided by 15?
Aleks04 [339]
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5 0
3 years ago
Another type of subtraction equation is 16-b=7. Explain how you would sole this equation then solve it.
sladkih [1.3K]

Answer: B = 9


Step-by-step explanation:


16-b=7

Rearrange so we can subtract 16 by 7

16 - 7 = 9


Substituting 9 for b and making sure it's correct.

16 - 9 = 7


4 0
4 years ago
Read 2 more answers
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