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3 years ago

Choose the correct words from the drop-down menu to make a true statement about the system of equations. 2x + y = 2 y = –2x – 1

Mathematics

1 answer:

jeyben [28]3 years ago

5 0

Well what does the x represent

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The parallel sides of a trapezoid measure 13.5 inches and 6.5 inches. The legs of the trapezoid are 4 inches and 7 inches. The h

belka [17]

Answer:

31 inches. Add all the sides together. The height is not needed. 6.5+13.5+4+7=31 inches.

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

ASAP MAJOR HELP NEEDED. I really need help. I am very confused on how to do this please help.

alexandr402 [8]

Because the 2 sides of the triangle are the same, they are both 21, the two bottom angles would also be the same.

The 3 inside angles of a triangle must equal 180 degrees.

The top angle is given as 38, so the remaining two angles must equal 180 - 38 = 142 degrees.

Since the 2 bottom angles would be the same, divide 142 by 2 to get x.

X = 142 / 2 = 71 degrees.

6 0

3 years ago

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A company claims that less than 10% of adults own a smart watch. You want to test this claim, and you find that in a random samp

Nezavi [6.7K]

Answer:

Test statistic is 0.67

Critical value is -2.33

Step-by-step explanation:

Consider the provided information.

The formula for testing a proportion is based on the z statistic.

$z=\frac{\hat p-p_0}{\sqrt{p_0\frac{1-p_0}{n}}}$

Were $\hat p$ is sample proportion.

$p_0$ hypothesized proportion and n is the smaple space,

Random sample of 100 adults, 12% say that they own a smart watch.

A company claims that less than 10% of adults own a smart watch.

Therefore, n = 100 $\hat p$ = 0.12 , $P_0$ = 0.10

$1 - P_0 = 1 - 0.10 = 0.90$

Substitute the respective values in the above formula.

$z=\frac{0.12-0.10}{\sqrt{0.10\frac{0.90}{100}}}$

$z\approx 0.67$

Hence, test statistic = 0.67

This is the left tailed test.

Now using the table the P value is:

P(z < 0.667) = 0.7476

P-value = 0.7476

$\alpha = 0.01$

Here, P-value > α therefore, we are fail to reject the null hypothesis.

$Z_{\alpha}= Z_{0.01} = -2.33$

Hence, Critical value is -2.33

7 0

3 years ago

Here is my question:

sergiy2304 [10]

Answer:

$\frac{2}{3} - \frac{1}{2} = \frac{1}{6} \times \frac{8}{9} = \frac{4}{27}$

6 0

3 years ago

HELP ASAP! A college campus has a lawn shaped like a circle with a radius, r, of 60 meters. Which is the best approximation of t

astra-53 [7]

Answer:

he answer is 2800, hope this helps!

Step-by-step explanation: :))

4 0

3 years ago