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2 years ago

HELPPPPP!!!! MATHHH!!!PLEASE

Mathematics

2 answers:

xxTIMURxx [149]2 years ago

7 0

Answer:

r=2.5

I hope this helps

Edit: If you need anymore help I can gladly help! :)

lbvjy [14]2 years ago

6 0

Answer:

Answer

Step-by-step explanation:

X2 = 11.8

Y2 = 13

ΔX = 5

ΔY = 0

θ = 0°

Equation of the line:

y = 0x + 13

When x=0, y = 13

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Allushta [10]

Answer:

$P = 2x+2y$ (1)

And we know that the lenght is y = 20.3. If we solve for x from equation (1) we got:

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And replacing we got:

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Step-by-step explanation:

For this case we know that the photo is rectangular. Let's define:

x = the width, y= the length

And we know that the perimeter is given by:

$P = 2x+2y$ (1)

And we know that the lenght is y = 20.3. If we solve for x from equation (1) we got:

$P-2y = 2x$

$\frac{P-2y}{2} =x$

And replacing we got:

$x = \frac{72.2 in -2*20.3 in}{2}= 15.8 in$

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4 0

3 years ago

Given a sample mean difference of 23, a standard error of 4.2, and a critical t value of 2.262, what are the values for the conf

erastova [34]

Answer: (13.4996, 32.5004)

Step-by-step explanation:

The confidence interval for mean difference is given by :-

$(\overline{x}_1-\overline{x}_2)\pm t^*\times SE$ ,

where $(\overline{x}_1-\overline{x}_2)$ = sample mean difference .

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SE= Standard error.

Given : $(\overline{x}_1-\overline{x}_2)=23$

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Now, the confidence interval for mean difference will be :-

$23\pm (2.262)\times (4.2)\\\\= 23\pm9.5004\\\\=(23-9.5004,\ 23+9.5004)\\\\=(13.4996,\ 32.5004)$

Hence, the required confidence interval : (13.4996, 32.5004)

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2 years ago

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NemiM [27]

Step-by-step explanation:

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or write

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and solve it do u will get the answer

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