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3 years ago

Please help with these questions. Write answer for 19 and 20 thank you

Mathematics

1 answer:

djverab [1.8K]3 years ago

5 0

Answer: It let me add an answer!! For number 19. The answer is y > 3x - 3. And for number 20. The answer is y is less than or equal to 1/2x + 1

Have a nice day! :)

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I didn’t understand so I need a help

JulsSmile [24]

Answer:

y is 107° and z is 36°

Step-by-step explanation:

73° and y are supplementary angles so they add up to 180°

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3 years ago

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Mr. Drucker uses a periodic review system to manage the inventory in his dry goods store. He likes to maintain 15 sacks of sugar

Bas_tet [7]

Answer:

6 sacks

Step-by-step explanation:

Mr. Drucker tries to always hold 15 sacks on his shelf to keep his inventory in stock. He currently has 9 sacks. Since 15 - 9 = 6, he needs to order 6 sacks.

This problem has many extraneous values which are good information about Mr. Drucker's buisness but do not pertain to how much he needs to order to maintain 15 sacks on his shelf.

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3 years ago

Hi guys! I have another question... Can you help? Will give 15 pts 2 screenshots below same problem. 1 of them is the problem an

poizon [28]

Answer:

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2 years ago

A government watchdog association claims that 70% of people in the U.S. agree that the government is inefficient and wasteful. Y

nata0808 [166]

Answer:

Option D) There is sufficient evidence that the true population proportion is not equal to 70%.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 1165

p = 70% = 0.7

Alpha, α = 0.02

Number of people who agreed , x = 746

First, we design the null and the alternate hypothesis

$H_{0}: p = 0.7\\H_A: p \neq 0.7$

This is a two-tailed test.

Formula:

$\hat{p} = \dfrac{x}{n} = \dfrac{746}{1165} = 0.64$

$z = \dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

Putting the values, we get,

$z = \displaystyle\frac{0.64-0.7}{\sqrt{\frac{0.7(1-0.7)}{1165}}} = -4.46$

Now, $z_{critical} \text{ at 0.02 level of significance } = \pm 2.33$

Since,

Since, the calculated z statistic does not lie in the acceptance region, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

Thus, there is enough evidence to support the claim that the true proportion differs from 70%.

Option D) There is sufficient evidence that the true population proportion is not equal to 70%.

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3 years ago

On the first day of summer a rainstorm brought 2.29 inches of rain to the area. During the rest of the summer there was 3 times

kkurt [141]

To solve this problem, we simply have to multiply the original inches of rain to that of how many times it was for the rest of summer. So in this case, simply multiply 2.29 by 3, that is:

2.29 inches * 3 = 6.87 inches

Answer:

<span>6.87 inches</span>

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4 years ago