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Lady_Fox [76]
2 years ago
10

A circle is centered at the point (-7, -1) and passes through the point (8, 7). The radius of the circle is 13 units. The point

(-15, y ) lies on this circle.
find Y
Mathematics
1 answer:
baherus [9]2 years ago
3 0

The standard form of the equation of circle is:

(x – h)^2 + (y – k) ^2 = r^2 

Where the center being at the point (h, k) and the radius being r

Substituting the values to the equation:

<span>(-15 - (-7)) ^2 + (y – (-1)) ^2 = 13^2 </span>

64 + (y +1) ^2 = 169

(y +1) ^2 = 105

y + 1 = 10.247

<span>y = 9.247</span>

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What is statistical power and how would you calculate it?
Natasha_Volkova [10]

Answer:

The statistical power of a hypothesis test is the probability of detecting an effect, if there is a true effect present to detect. Power can be calculated and reported for a completed experiment to comment on the confidence one might have in the conclusions drawn from the results of the study.

I hope it's helpful!

3 0
3 years ago
Margie has a $50.00 budget to purchase $45.00 pair of boots. If there is an 8% sales tax rate then how much under budget will Ma
LuckyWell [14K]
She will be $1.40 under budget.

8% = 8/100 = 0.08

Adding this to 100% of the price of the shoes, we get 108% = 108/100 = 1.08.

We multiply the price of the shoes by this:
45*1.08 = 48.60

Subtract this from 50:
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7 0
3 years ago
Read 2 more answers
Help please !! Thank u
leonid [27]

Answer:

parallel = same slope (-2x)

so it's y=-2x + b

let's find b by plugging in 1 for x and 3 for y (the coordinates)

3 = -2*1 + b

3 = -2 + b

5 = b

there you have it:

y = -2x +5

brainliest would really be appropriated (possible when someone else also leaves an answer)

4 0
3 years ago
Jane is helping the librarian stack books on some new shelves. She is to stack 116 books on 16 shelves. The librarian told her t
goblinko [34]

Answer:

No

Step-by-step explanation:

This is not possible for Jane to put the same amount it all depends on how the book fits, how thick it is, how skinny it is and what else is on the shelf.

4 0
3 years ago
Read 2 more answers
How do you do the equation 3.25 divided by 5.2
valentina_108 [34]
3.25\ divided\ by\ 5.2= \frac{3.25}{5.2} =\frac{3.25\cdot 20}{5.2\cdot20} =\frac{65}{104} =\frac{65:13}{104:13} = \frac{5}{8} =0.625\\\\Ans.\ 0.625
5 0
3 years ago
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