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3 years ago

Let “a” represent Andrew’s age TODAY. Write an expression to represent the situation. Andrew’s age in 4 years.

1 answer:

7 0

Answer: 4a

Explanation If ‘a’ represents his age today, and you have to find his age in four years you take 4 multiplied a. (4 x a) putting it together and you would get 4a

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Two dice are rolled. What is the probability of getting doubles?

Lina20 [59]

Answer:

the probability of getting doubles is 1 / 6

I hope this may be helpful

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2 years ago

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At a canning facility, a technician is testing a machine that is supposed to deliver 250 milliliters of product. The technician

Serhud [2]

Answer:

The value of the test statistic is $t = 1.97$

Step-by-step explanation:

The null hypothesis is:

$H_{0} = 250$

The alternate hypotesis is:

$H_{1} \neq 250$

Our test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the null hypothesis value, $\sigma$ is the standard deviation and n is the size of the sample.

In this problem:

$X = 251.6, \mu = 250, \sigma = 5.4, n = 44$

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{251.6 - 250}{\frac{5.4}{\sqrt{44}}}$

$t = 1.97$

The value of the test statistic is $t = 1.97$

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3 years ago

Find all numbers whose absolute value is -9.

Neko [114]

Answer:

None

Step-by-step explanation:

A number's absolute value will always be positive

|9| = 9

|-9| = 9

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3 years ago

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MatroZZZ [7]

Answer:

I can't really see the whole question, but for a cone the volume formula is πr2h

Step-by-step explanation:

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3 years ago

A rectangle has a height of 7x^2and a width of 3x^2+ 8x + 7.

Anika [276]

Answer:

Step-by-step explanation:

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3 years ago