3 years ago

PLEASE HELP, WILL MARK BRAINLIESTTTTTT!! (one answer is cut out the last answer is •2x-1•

Mathematics

1 answer:

mario62 [17]3 years ago

7 0

Answer:

x+1 x+4 2x +1

are th answer

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Help immediate i will mark you brainliest

ExtremeBDS [4]

Answer:

What's the question?

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3 years ago

Factor Completely: 3x^2+8x+5

Katen [24]

Answer:

17x+5

Step-by-step explanation:

3x^2=9x

9x+8x+5

(9x+8x)+5

17x+5

5 0

4 years ago

A 16-ounce bag of cereal costs about $2.88. What is the unit rade of the cereal?

VLD [36.1K]

Answer:

18 cents per ounce

Step-by-step explanation:

The first step is to identify the unit. In this case, you are told you have 16-ounces. Therefore, your unit is an ounce.

To find the price of one ounce, just divide your price of $2.88 by 16.

Unit rate = $2.88 / 16 = 0.18 or 18 cents per ounce.

4 0

3 years ago

Read 2 more answers

Evaluate the expression for k = 17.<br><br> 3k =

Debora [2.8K]

I believe this would be 51

7 0

3 years ago

In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2455 subjects randomly select

Genrish500 [490]

Answer: 0.355,0.405)

Step-by-step explanation:

Given : Significance level : $\alpha=1-0.99=0.01$

Number of subjects (n) = 2455

Number of surveys returned = 931

The probability of surveys get return will be :-

$p=\dfrac{931}{2455}=0.379226069246\approx0.38$

The confidence interval for proportion is given by :-

$p\pm z_{\alpha/2}\times\sqrt{\dfrac{p(1-p)}{n}}$

$0.38\pm z_{0.005}\times\sqrt{\dfrac{0.38(1-0.38)}{2455}}\\\\=0.38\pm(2.576)0.0098\\\approx0.38\pm0.025=(0.355,0.405)$

Hence, the 99% confidence interval for the proportion of returned surveys : (0.355,0.405)

5 0

4 years ago