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2 years ago

Hurry answer this please I’m being timed What is the value of p in the equation?

Mathematics

1 answer:

melisa1 [442]2 years ago

7 0

Answer:

it will be 0

Step-by-step explanation:

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I will mark brainliest

BARSIC [14]

Answer:

Your answer would be D, the last one

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2 years ago

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Simplify this please

Fittoniya [83]

Answer:

Step-by-step explanation:

$\sqrt[3]{64}$

$= \sqrt[3]{4 \times 4 \times 4}$

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2 years ago

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Pam has taken 4 tests. She scored an 82, 94, 89 and 92. What would she need to score on her 5th test to have a mean of 90?

zavuch27 [327]

Answer:

Step-by-step explanation:

5*90 = 450

82+94+89+92 = 357

450-357 = 93

hope this helped :)

5 0

3 years ago

The price of a $250 item after successive discounts of 20% and 30% is?

Ivan

Answer:

The price of item after successive discounts are 20% and 30% is $140.

Step-by-step explanation:

The marked price of item is $250.

Two successive discounts are 20% and 30%.

Price of item after discounts of 20% is

$250-\frac{20}{100}(250)=250-50=200$

New price of item after first discount is $200.

Price of item after second discount, i.e., 30% is

$200-\frac{30}{100}(200)=200-60=140$

Therefore, the price of item after successive discounts are 20% and 30% is $140.

3 0

3 years ago

An automobile manufacturer claims that its car has a 35.935.9 miles/gallon (MPG) rating. An independent testing firm has been co

Serjik [45]

<h2>Answer with explanation:</h2>

Let $\mu$ be the population mean.

For the given claim , we have

Null hypothesis : $H_0: \mu=35.9$

Alternative hypothesis : $H_a: \mu\neq35.9$

Since alternative hypothesis is two-tailed , so the test is a two-tailed test.

Given : Sample size : n=220 ;

Sample mean: $\overline{x}=35.6$ ;

Standard deviation: $s=2.2$

Test statistic for population mean:

$z=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}$

$z=\dfrac{35.6-35.9}{\dfrac{2.2}{\sqrt{220}}}\approx-2.02$

By using the standard normal distribution table of z , we have

P-value ( two tailed test ) : $2P(Z>|z|)=2(1-P(Z$

$=2(1-P(z$

Since , the P-value is greater than the significance level of $\alpha=0.02$ , it means we do not have sufficient evidence to reject the null hypothesis.

5 0

3 years ago