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viktelen [127]
3 years ago
8

I NEED HELP WITH MATH

Mathematics
1 answer:
suter [353]3 years ago
4 0
The answer is 9n because 2n+7n simplifies into 9n
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The average systolic blood pressure was found to be 140 mm for people who have high responsibility jobs, specifically investment
9966 [12]

Answer:

Option B)

H_{0}: \mu = 140\text{ mm}\\H_A: \mu < 140\text{ mm}

Step-by-step explanation:

We are given the following in the question:

Hypothesis:

The doctors and u=instructor claims that practicing yoga reduces blood pressure and hence is beneficial to people.

Population mean, μ =  140 mm

Sample mean, \bar{x} =  139 mm

Sample size, n = 51

Sample standard deviation, s = 5 mm

Thus, we can design the null hypothesis and alternate hypothesis as

H_{0}: \mu = 140\text{ mm}\\H_A: \mu < 140\text{ mm}

The null hypothesis states that the population have a blood pressure of 140 mm. The alternate hypothesis states that yoga reduces the blood pressure and the sample has a blood pressure less than 140 mm.

Thus, the correct answer is

Option B)

H_{0}: \mu = 140\text{ mm}\\H_A: \mu < 140\text{ mm}

3 0
3 years ago
I can't fail and no one has answered my previous questions so please help.
Afina-wow [57]
When you know your equation f(x) and they want you to find f(-4), it means that they want to know what f(x) is worth when x=-4 Therefore, you only need to plug in you x in the equation f(x)=5x-2 f(-4)=5(-4)-2 =-20-2 =-22 (B)
8 0
3 years ago
Choose all the answers that apply.
Flura [38]

Answer: removes liquid waste and hormones from the blood and works closely with the nervous system.

Step-by-step explanation: i dunno just researched it online lol

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3 years ago
The original cost of a pair of shoes is 850dhs. The store offers a markup of 30%. Find the retail price of pair of shoes.
mamaluj [8]

Answer:

Step-by-step explanation:

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3 years ago
4 &gt; p - 1
alexdok [17]

Answer:

p < 5

I think this is the answer?..

5 0
2 years ago
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