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3 years ago

Find the value of 5 ∙ 23. 30 40 1,000 ASAP

Mathematics

2 answers:

True [87]3 years ago

5 0

The value of 5 ∙ 23 is 115.

The small dot is typically used as a multiplication symbol. When we multiply these two numbers the result is 115.

Shkiper50 [21]3 years ago

4 0

Answer:

mr grumby your slow ..... the 3 is the above the 2 not beside it , try again DUB

Step-by-step explanation:

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What is the value of the expression 100 - 92 ÷ 3?

lora16 [44]

Answer:

2.67

Step-by-step explanation:

100-92=8

8÷3

$\sqrt[3]{8}$

=2.67

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3 years ago

Read 2 more answers

Question 1 (1 point) Question 1 Unsaved

QveST [7]

en la cocina (where is the dishwasher? the kitchen)

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3 years ago

A laptop producing company also produces laptop batteries, and claims that the batteries

gregori [183]

Answer:

There is enough evidence to support the claim that the batteries power the laptops for significantly less than 4 hours. (P-value = 0).

The null and alternative hypothesis are:

$H_0: \mu=4\\\\H_a:\mu< 4$

Step-by-step explanation:

The question is incomplete: To test this claim a sample or population standard deviation is needed.

We will estimate that the sample standard deviation is 2 hours, and use a t-test to test that claim.

NOTE (after solving): The difference between the sample mean and the mean of the null hypothesis is big enough to reject the null hypothesis, even when we have a sample standard deviation of 3.5 hours, which can be considered bigger than the maximum standard deviation for the sample.

This is a hypothesis test for the population mean.

The claim is that the batteries power the laptops for significantly less than 4 hours.

Then, the null and alternative hypothesis are:

$H_0: \mu=4\\\\H_a:\mu< 4$

The significance level is 0.05.

The sample has a size n=500.

The sample mean is M=3.5.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=2.

The estimated standard error of the mean is computed using the formula:

$s_M=\dfrac{s}{\sqrt{n}}=\dfrac{2}{\sqrt{500}}=0.0894$

Then, we can calculate the t-statistic as:

$t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{3.5-4}{0.0894}=\dfrac{-0.5}{0.0894}=-5.5902$

The degrees of freedom for this sample size are:

$df=n-1=500-1=499$

This test is a left-tailed test, with 499 degrees of freedom and t=-5.5902, so the P-value for this test is calculated as (using a t-table):

$P-value=P(t$

As the P-value (0) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that the batteries power the laptops for significantly less than 4 hours.

5 0

3 years ago

A swimming pool at a park measures 9.75 meters by 7.2 meters what is the area?

Brilliant_brown [7]

The area is 70.2 meters because length times width equals area okay also there's a magical invention called a calculator that might be helpful in the future my friend

5 0

3 years ago

Choices: One-sixth cups Five-sixths cups 1 and two-thirds cups 1 and 5 / 6 cups

navik [9.2K]

Answer:

Patel will require more orange juice = $\frac{371}{660}$ cups