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2 years ago

Write an equation that goes through the point (2,-3) with a slope of -3

Mathematics

1 answer:

uysha [10]2 years ago

7 0

Answer:

Point slope:y - y1 = m(x -x1)y - y1 = m(x -x1)

Given values: (x1 , y1) = (2 , 3)m = 3

Solution: y - 3 = 3(x - 2

Step-by-step explanation:

hope this helps if not let me know have a good day

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Amiraneli [1.4K]

D. X=3cm
Since the triangles are similar, just set up a proportion to solve for x.

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3 years ago

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A researcher surveyed 150 high school students and found that 68% played a musical insturment. What would be a reasonable range

maria [59]

Answer:

The reasonable range for the population mean is (61%, 75%).

Step-by-step explanation:

The interval estimate of a population parameter is an interval of values that consist of the values within which the true value of the parameter lies with a certain probability.

The mean of the sampling distribution of sample proportion is, $\hat p$ .

One of the best interval estimate of population proportion is the 95% confidence interval for proportion,

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

Given:

n = 150

$\hat p$ = 0.68

The critical value of <em>z</em> for 95% confidence level is:

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

Compute the 95% confidence interval for proportion as follows:

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

$=0.68\pm1.96\sqrt{\frac{0.68(1-0.68)}{150}}\\\\=0.68\pm 0.0747\\\\=(0.6053, 0.7547)\\\\\approx (0.61, 0.75)$

Thus, the reasonable range for the population mean is (61%, 75%).

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4 years ago

When 7/8x^2-3/4 x is subtracted from 5/8x^2-1/4x+2 the difference is?

artcher [175]

7/8x²-3/4x - 5/8x²-1/4x+2

x²/4-x+2

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4 years ago

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Can you add and subtract integers and surds together?

Ne4ueva [31]

Answer:

Both of these examples are wrong. You cannot add/subtract integers and square roots together, however, you could add square roots together if they have the same number under the square root. For example, 2 - 2√6 will stay as 2 - 2√6 because they aren't like terms. 25 + 5√5 + 5√5 + 5 = 30 + 10√5 because 25 + 5 = 30 and 5√5 + 5√5 = 10√5. We can add 5√5 and 5√5 together because they have the same number under the square root. If we were to compute √2 + √3, we would just leave it as is because they don't have the same number under the square root.

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3 years ago

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Step-by-step explanation:

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