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2 years ago

What is the slope of the line represented by the values in the table?

Mathematics

1 answer:

Alina [70]2 years ago

8 0

Answer: 2

Step-by-step explanation:

$\frac{-2-14}{2-10}=\frac{-16}{-8}=\boxed{2}$

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Find the area of the shaded region please.

Ira Lisetskai [31]

The first shaded triangle is 144 cm.

7 0

3 years ago

Find the % of change. Original price: $185 New price: $160

mojhsa [17]

Answer:

-13.51

Step-by-step explanation:

work out the difference (increase) between the two numbers you are comparing. Then: divide the increase by the original number and multiply the answer by 100. % increase = Increase ÷ Original Number × 100.,

so, -13.51

8 0

2 years ago

If a central angle measures 25, then the measure of its intercepted arc is

borishaifa [10]

Medida do angulo central = medida do arco interceptado
arco = 25º e ângulo central = 25º

7 0

4 years ago

Help me with number question 7

oksano4ka [1.4K]

Just use the Pythagorean Theorem
(9 +x)^2 = 15^2 + x^2
x^2 + 18x + 81 = 225 + x^2
18x = 144
x = 8
So the three sides of the triangle are
15, 8 and 17

5 0

3 years ago

A simple random sample of size nequals40 is drawn from a population. The sample mean is found to be 103.9, and the sample stand

yan [13]

Answer:

There is enough evidence to support the claim that the population mean is greater than 100

Step-by-step explanation:

Step 1: We state the hypothesis and identify the claim

$H_0:\mu=100$ and $H_1:\mu \:>\:100$ (claim)

Step 2: Calculate the test value.

$t=\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$

$\implies t=\frac{103.9-100}{\frac{21.9}{\sqrt{40} } }=1.1263$

Step 3: Find the P-value. The p-value obtained from a calculator is using d.f=39 and test-value 1.126 is 0.134

Step 4: We fail to reject the null hypothesis since P-value is greater that the alpha level. (0.134>0.05).

Step 5: There is enough evidence to support the claim that the population mean is greater than 100.

Alternatively: We could also calculate the critical value to obtain +1.685 for $\alpha=0.05$ and d.f=39 and compare to the test-value:

The critical value (1.685>1.126) falls in the non-rejection region. See attachment.

NB: The t- distribution must be used because the population standard deviation is not known.

5 0

4 years ago