3 years ago

Which of the following is a rational number?

1 answer:

5 0

The square root of 81 is rational since it equals 9. Rational numbers can be expressed as a fraction of two integers. The fraction here would be 9/1, hence it is rational. The others are not perfect squares and can’t be expressed as a fraction of two integers.

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Hiii so i slept during class and i'm not tryna fail so can y'all help me out<br> ill give brainly

Gnom [1K]

Answer:

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Step-by-step explanation:

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3 years ago

2+y=11 What is the answer?

Nitella [24]

Answer:The answer has to be 9

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Step-by-step explanation: Because 2 plus 9 equals 11 and this is an addition problem

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3 years ago

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A 37 bag sample had a mean of 421 grams. Assume the population standard deviation is known to be 29. A level of significance of

Ierofanga [76]

Answer: $H_0:\mu=421$

$H_a : \mu\neq421$

Step-by-step explanation:

A null hypothesis is a type of hypothesis that is used in statistics that assumes there is no difference between particular characteristics of a population wheres the alternative hypothesis shows that there is a difference.

Given: A 37 bag sample had a mean of 421 grams.

Let $\mu$ be the population mean.

Then, the null hypothesis would be:

$H_0:\mu=421$

whereas the alternative hypothesis would be:

$H_a : \mu\neq421$

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3 years ago

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Sergio039 [100]

It’s 39. You got it right

6 0

3 years ago

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Can anyone help me with this

Nataliya [291]

To find surface area, we can use the equation:

SA=2lw+2wh+2lh, where:
l=10 in
w=3 in
h=7 in

SA=(2)(10)(3)+(2)(3)(7)+(2)(10)(7)
SA=60+42+140
SA=242 in²

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3 years ago