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3 years ago

Brainliest + points! Please show your work!

Mathematics

1 answer:

valentinak56 [21]3 years ago

7 0

Find two points where the line intersects with an x and y value that are whole numbers.

The line crosses (0,3) and (-2,-1)

The slope is the change in Y divided by the change in x.

The change in Y is -1 - 3 = -4

The change in x is -2 - 0 = -2

The slope becomes -4 / -2 which simplifies to 2

The answer is D.

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Need help asap please

Leno4ka [110]

Answer:

$\displaystyle 40$

Step-by-step explanation:

This is an isosceles triangle, therefore you must double up DA to get 40.

I am joyous to assist you at any time.

5 0

3 years ago

2x + 5 equals 3x squared + 2 x - 7

iris [78.8K]

X should equal 2 and -2 (if it is just the x squared and not 3x)

5 0

3 years ago

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I need answer for this math problem

tekilochka [14]

Answer:

3h²

Step-by-step explanation:

factor or breakdown 3h² : 3 * h * h

factor or breakdown 3h³ : 3 * h * h * h

Now, we can see that 3 * h * h is common so 3h² is the gcf.

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2 years ago

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Katie earns 15$ each hour. Round to total time katie worked to the nearest hour and estimate her pay by using mulitplacation

Cloud [144]

Answer:

How long did she work for though?

Step-by-step explanation:

3 0

2 years ago

Jason wants to know the percentage of M & M's that are green. He chooses a sample of 30 M & M's from a bag, and 3 of the

KATRIN_1 [288]

Answer:

The margin of error of his experiment is of 0.1074.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

The margin of error is of:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

30 M & M's from a bag, and 3 of them are green.

This means that $n = 30, \pi = \frac{3}{30} = 0.1$

Standard 95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a p-value of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

Margin of error:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$M = 1.96\sqrt{\frac{0.1*0.9}{30}}$

$M = 0.1074$

The margin of error of his experiment is of 0.1074.

5 0

3 years ago