HELP!!! PLEASE HURRY!!!!

<img src="https://tex.z-dn.net/?f=%5Csqrt%7B12%7D%5C%3A%5Ctimes%20%5Csqrt%7B12%7D%5C%3A" id="TexFormula1" title="\sqrt{12}\:\tim

ddd [48]

Answer:

144

your welcome :)

8 0

3 years ago

Read 2 more answers

BRAINLIEST!!!!!!<br> !!!!!!!

Iteru [2.4K]

Answer:

3x/4 - 17

Step-by-step explanation:

8 0

3 years ago

A store owner buyso backpacks at a certain price and sells them at a higher price. The difference is called the markup. If she p

Svetradugi [14.3K]

The selling price is <u>$29.40</u>

<h3>EXPLANATION</h3>

10% of $21 = $2.10

$2.10 x 4 = $8.40 = 40%

$21 + $8.40 = <u>$29.40</u>

Hope this helps!

4 0

3 years ago

What are the domain and range of f (x)= -27

Andrews [41]

Answer:

Domain: (-∞,∞)

Range: {−27}

4 0

3 years ago

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In a study of 259 comma 995 cell phone users, it was found that 121 developed cancer of the brain or nervous system. Assuming t

IRISSAK [1]

Answer:

The probability of having 121 cases or less is:

$P(X$

This suggests that the study does not show any significantly effect of the use of cell phone in the probability of having brain or nervous system cancer. The use of cell phone does not appear to be a significant factor in the risk of having this type of cancer.

Step-by-step explanation:

We start by calculating the expected standard deviation of the population cases:

$\sigma=\sqrt{n\pi(1-\pi)}=\sqrt{259,995*0.000489*0.999514}\\\\\sigma=\sqrt{126.29}\\\\\sigma=11.24$

Then, to calculate the probability, we first calculate the z-score for 121 cases.

$z=\dfrac{X-\mu}{\sigma}=\dfrac{121-127}{11.24}=\dfrac{-6}{11.24}=-0.5338$

The probability of having 121 cases or less is:

$P(X$

This suggests that the study does not show any significantly effect of the use of cell phone in the probability of having brain or nervous system cancer. The use of cell phone does not appear to be a significant factor in the risk of having this type of cancer.

3 0

4 years ago