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4 years ago

Which equation shows y+1/5=3x in standard form?

Mathematics

2 answers:

zhannawk [14.2K]4 years ago

4 0

I believe the correct answer is 15x + 5y =-1 but im not positive cause i did the problem and got -1 but the equation i got looks different i got the equation -15x + 5y = -1
These are the steps i followed
You always begin by the Given equation, which is in this case:
y+ = 3x
To remove the fraction, you multiply the whole equation by 5:
5y + 1 = 15x
Then, you move the "15x" the left-side of the equation, changing it's sign
-15x + 5y +1 = 0
You move the "1" to the right side, changing it's sign
-15x + 5y = -1

ololo11 [35]4 years ago

3 0

The answer is 15x-5y=1.

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In a sale, the prices in a shop were all decreased by 20%. After the sale, they were all increased by 25%. What was the overall

Andreas93 [3]

Prices changed from 100% price to 80% price due to sale.

100% - 20% = 80%

THEN increased by 25% so

80% + 25% = 105%

so the overall effect is that the price rose from the original (100%) to 105%
so a 5% increase

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4 years ago

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When 2 angles are supplementary, they both add together to equal 180 degrees. Therefore, choice 4 is correct because it adds 2x and 3x-15 together to equal 180 degrees

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4 years ago

QUICK PLEASE The school library is planning to purchase new bookshelves. If they calculated that each bookshelf can hold 75 book

podryga [215]

Answer:

75 divided by 350

Step-by-step explanation:

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3 years ago

Please help.........

faust18 [17]

The answer for PA is 60/13. This is found by
The area of the rectangle is 60, therefore, the big triangle areas are 30 each. We know that the hypotenuse is 13, so therefore, we get
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Hope this helps and have a nice day:)

5 0

4 years ago

In a study of government financial aid for college students, it becomes necessary to estimate the percentage of full-time coll

algol13

Answer:

(a) The sample size required is 2401.

(b) The sample size required is 2377.

Step-by-step explanation:

The confidence interval for population proportion p is:

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

The margin of error in this interval is:

$MOE=z_{\alpha/2}\sqrt{\frac{\hatp(1-\hat p)}{n}}$

The information provided is:

MOE = 0.02

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

(a)

Assume that the proportion value is 0.50.

Compute the value of n as follows:

$MOE=z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}\\0.02=1.96\times \sqrt{\frac{0.50(1-0.50)}{n}}\\n=\frac{1.96^{2}\times0.50(1-0.50)}{0.02^{2}}\\=2401$

Thus, the sample size required is 2401.

(b)

Given that the proportion value is 0.55.

Compute the value of n as follows:

$MOE=z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}\\0.02=1.96\times \sqrt{\frac{0.55(1-0.55)}{n}}\\n=\frac{1.96^{2}\times0.55(1-0.55)}{0.02^{2}}\\=2376.99\\\approx2377$

Thus, the sample size required is 2377.

(c)

On increasing the proportion value the sample size decreased.

8 0

4 years ago