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3 years ago

Some save me please will name brainliest if the answer is correct

Mathematics

2 answers:

Papessa [141]3 years ago

6 0

Answer:

-5, -9

Step-by-step explanation:

This point is located in the fourth quadrant. When rotated at 270 degrees, it'll end up in the third quadrant. The rules for this quadrant is that both the x and y value will be negative.

Shkiper50 [21]3 years ago

3 0

Answer: I think is -9(5,)

Step-by-step explanation:

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I don't understand the last one. I got the right answer, but how to do it? (Reply ASAP).

k0ka [10]

Denominator, 12 and 9 are on the bottom. and 15 and x are on the right side.

7 0

3 years ago

Read 2 more answers

In Pennsylvania the average IQ score is 101.5 The variable is normally distributed and the population standard deviation is know

elena-14-01-66 [18.8K]

Answer:

P-value = 0.0368

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 101.5

Sample mean, $\bar{x}$ = 106.4

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 15

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 101.5\\H_A: \mu> 101.5$

We use One-tailed(right) z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{106.4 - 101.5}{\frac{15}{\sqrt{30}} } = 1.789$

Now, $z_{critical} \text{ at 0.05 level of significance } = 1.64$

Since,

$z_{stat} > z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, students in Pennsylvania have an IQ that is significantly greater than the state average.

P-value can be calculated with the standard normal table.

P-value = 0.0368

P-value is lower than the significance level.

4 0

3 years ago

Pls helppp (ZOOM IN TO SEE FULL PIC)

bogdanovich [222]

X = 89

Used the Pythagorean theorem (a squared plus b squared equals c squared)

3 0

3 years ago

Joy had 284 markers and

Agata [3.3K]

Answer:

Markers =53

crayons= 56

Step-by-step explanation:

When there's a problem ask

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2 years ago

For the problems 29-32, use () 5 6 fx x =+ and 2 () gx x x =+ .

OleMash [197]

Answer:

AZSXDCFVGBHNUIJMO,

Step-by-step explanation:

XECRVTBYNUMI,OP.[

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3 years ago