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3 years ago

Pleaseeee help me solve this

Mathematics

2 answers:

fenix001 [56]3 years ago

8 0

Answer:

(0,0) (1,3) (2,6) (3,9)

Step-by-step explanation:

y=3x

y=3(1)

y=3

y=3(2)

y=6

y=3(3)

y=9

maxonik [38]3 years ago

4 0

I think it’s 3 6 9 not sure

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Answers for this paper plz

Anna [14]

Answer:

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Step-by-step explanation:

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3 years ago

Researchers measured the bone mineral desnsity of the spines of 94 women who had taken teh drug CEE. The mean was 1.016 g/cm2, a

Valentin [98]

Answer:

The 95% confidence interval for the mean is between 0.985g/cm² and 1.047 g/cm².

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96*\frac{0.155}{\sqrt{94}} = 0.0310$

The lower end of the interval is the mean subtracted by M. So it is 1.016 - 0.0310 = 0.985 g/cm²

The upper end of the interval is the mean added to M. So it is 1.016 + 0.0310 = 1.047 g/cm²

The 95% confidence interval for the mean is between 0.985g/cm² and 1.047 g/cm².

6 0

3 years ago

How many is 192 fl oz. = how many pints

NemiM [27]

There are 16 fluid ounces in a pint, so we have 192/16=12 pints.

6 0

3 years ago

Read 2 more answers

Quick algebra 1 question for 10 points!

jonny [76]

Answer:

$\displaystyle{f(x) = -2(x-3)^2 + 2}$

Step-by-step explanation:

To find y-intercept of a graph, we have to substitute x = 0 to find it - consider each functions:

First Choice

$\displaystyle{f(x) = 2x(x+14)-64}\\\\\displaystyle{f(0) = 2\cdot 0(0+14)-64}\\\\\displaystyle{f(0) = 0\cdot 14-64}\\\\\displaystyle{f(0) = -64}$

Second Choice

$\displaystyle{f(x) = (x+4)^2+2x}\\\\\displaystyle{f(0) = (0+4)^2 + 2(0)}\\\\\displaystyle{f(0) = 4^2}\\\\\displaystyle{f(0) = 16}$

Third Choice

$\displaystyle{f(x) = (x-16)^2 + 4}\\\\\displaystyle{f(0) = (0-16)^2 + 4}\\\\\displaystyle{f(0) = (-16)^2 + 4}\\\\\displaystyle{f(0) = 256 + 4}\\\\\displaystyle{f(0) = 260}$

Fourth Choice

$\displaystyle{f(x) = -2(x-3)^2 + 2}\\\\\displaystyle{f(0) = -2(0-3)^2 + 2}\\\\\displaystyle{f(0) = -2(-3)^2 + 2}\\\\\displaystyle{f(0) = -2\cdot 9 + 2}\\\\\displaystyle{f(0) = -18+2}\\\\\displaystyle{f(0) = -16}\\$

Therefore, fourth choice is correct.

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2 years ago

cSuppose you are standing such that a 45-foot tree is directly between you and the sun. If you are standing 200 feet away from t

beks73 [17]

Answer:

you could stand at 5.0 ft and still be completely in the shadow of the tree

Step-by-step explanation:

From the diagram attached below;

We consider;

$\overline {BC}$ to be the height of the tree and $\overline {DE}$ to be the height of how tall you could be and still be completely in the shadow of the tree.