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3 years ago

PLEASE HELP!! What is the domain of (f)

Mathematics

1 answer:

pishuonlain [190]3 years ago

4 0

The domain is (-5,4). If that makes any sense, if it doesnt ill explain

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Simplify: 2(8 - 2x4).

pentagon [3]

Answer:

Step-by-step explanation:

Distrubutive Property:

↓

A(B+C)=AB+AC

<em>Multiply by the numbers from left to right.</em>

4*2=8

<em>Therefore the correct answer is </em><em>2(8-8x).</em>

<em />

7 0

3 years ago

Read 2 more answers

A data set includes 108 body temperatures of healthy adult humans having a mean of 98.3degrees°F and a standard deviation of 0.6

mylen [45]

<h2>Answer with explanation:</h2>

The confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : n=106

Sample mean : $\overline{x}=98.3^{\circ}\ F$

Standard deviation : $\sigma= 0.69^{\circ}F$

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

Critical value : $z_{\alpha/2}=2.576$

Then , 99% confidence interval estimate of the mean body temperature of all healthy humans will be :-

$98.3\pm (2.576)\dfrac{0.69}{\sqrt{106}}\\\\\approx98.3\pm0.173=(98.3-0.173,\ 98.3+0.173)=(98.127,\ 98.473)$

Since 98.6 is higher than the upper limit of the confidence interval (98.473), then this suggest that the mean body temperature could be lower then 98.6 degrees.

The best estimate of population mean is always the sample mean. $\mu=\overline{x}=98.3^{\circ}\ F$

7 0

3 years ago

i really need help with this oneeeee.Mickey went to the mall to buy new sneakers. the store was having a 60% off sale. Mickey pa

Ray Of Light [21]

Answer:

180

Step-by-step explanation:

3 0

3 years ago

Polygon Q is a scaled copy of Polygon P. The value of x is 6, what is the scale factor?

ANTONII [103]

Answer:

B. 3/4

Step-by-step explanation:

I just did it and got it right

3 0

3 years ago

Tim install 50 square feet of his floor in 45 mins. At this rate how long does it take him to install 495 square feet. Is that 9

Nimfa-mama [501]

Answer:

the answer is 445.5

Step-by-step explanation:

what I did was divide 50 by 495 and got 9.9 then since it took 45 minutes every 50 square feet of floor i multiplied 45 x 9.9 and got 445.5

6 0

3 years ago