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3 years ago

Help NEEDED please! Mark BRAINLIEST

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

6 0

RS and PQ are parallel because the keep going on forever but from different directions. hope that helped

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What's the exact value of tan(-4pi/3)

Bumek [7]

Tan(-4pi/3) = 0.0731897502

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4 years ago

Write the converse of the statement below. Then determine whether the statement is true or false. If false, give a counter examp

Nastasia [14]

Answer:

Step-by-step explanation:

5 0

3 years ago

Use the number line below, where RS = 5y + 2, ST = 3y + 6, and RT = 48

tekilochka [14]

RS+ST= RT

(7Y+3)+(2Y+9)= 14Y-8

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3 years ago

The average systolic blood pressure was found to be 140 mm for people who have high responsibility jobs, specifically investment

defon

Answer:

t = -1.428

Step-by-step explanation:

Average blood pressure among people with high responsibility jobs = u = 140 mm

Number of people sampled for the study = n = 51

Average blood pressure of the sample = x = 139 mm

Standard deviation of the sample = s = 5 mm

The claim is that practicing yoga decreases the blood pressure. So we have to test that after practicing yoga, the average blood pressure will be lesser than 140. Based on this we can formulate the null and alternate hypothesis as:

Null Hypothesis: $\mu \geq 140$

Alternate Hypothesis: $\mu < 140$

Since population standard deviation is not known, we cannot use z-distribution for this test. We are given the value of sample standard deviation, so t-test will be used for this case.

Test statistic is calculated as:

$t=\frac{x-u}{\frac{s}{\sqrt{n} } }$

Using the values in this formula gives us:

$t=\frac{139-140}{\frac{5}{\sqrt{51}}}\\\\ t=-1.428$

Therefore, the value of test statistic is -1.428

4 0

3 years ago

Solve the equation sin theta = 0.3 to the nearest tenth. Use the restrictions 90degrees < theta < 180degrees.

Alexxandr [17]

We first do:
∅ = sin⁻¹(0.3)
∅ = 17.5°

To go into the second quadrant, we add 90°.
∅ = 17.5 + 90
= 107.5°
The answer is A.

5 0

3 years ago