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SOVA2 [1]
3 years ago
14

Write the equation of the given circle. center (1, -5) radius of 10

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
6 0
The circle equation is in the format (x – h)2 + (y – k)2= r2, with the center being at the point (h, k) and the radius being "r". 

Therefore (x – 1)2 + (y +5)2= 102
x2 + y2 + 1 - 2x + 25 + 10y = 100
x2 + y2 - 2x + 10y = 74
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Solve the system of equations. -12x-5y=40 and 12x-11y=88 x= y=
SpyIntel [72]

Answer:

(0,-8)

x=0

y=-8

Step-by-step explanation:

There are a couple of ways you can solve this I used what I think is called the elimination method

We first start by writing the equations in linear form (y=mx+b)

For the first one we have -12x-5y=40

we add 5y to both sides and subtract 40 to get

-12x-40=5y

divide by 5 to get

-12/5x-8=y

Then the second one we have

12x-11y=88

same deal here, add 11y and subtract 88 to get

12x-88=11y

divide by 11 and get

12/11x-8=y

We then set the two equations equal to each other and get

-12/5x-8=12/11x-8

We can add 8 to both sides and get

-12/5x=12/11x

Just by looking at it you can see that the only solution for x is 0

Plug in 0 to the first equation and get -12*0-5y=40

This means that -5y=40

Solve for y and get -8

3 0
3 years ago
Read 2 more answers
Today the product of the ages (in integers) of a father and son is 2015.
inn [45]

Answer:

34 years

Step-by-step explanation:

To begin even finding this ages you would have to find the 2 numbers in which (when multiplied) equal 2015. The numbers I have found that are most reasonable include:

65 and 31.

65 x 31 = 2015

So the difference:

65 - 31 = 34

3 0
3 years ago
Read 2 more answers
Noah bought 4 tacos and paid $6. At this rate, how many tacos could he buy for $15? Jada's family bought 50 tacos for a party an
lesya [120]

Answer:

-Noah could buy 10 tacos for $15.

-Jada's tacos were not the same price as Noah's tacos.

Step-by-step explanation:

You can use a rule of three to find the amount of tacos that Noah could buy with $15:

$6  →  4

$15 →  x

x=(15*4)/6=10

At this rate, Noah could buy 10 tacos for $15.

Now, to find out if Jada's tacos were the same price as Noah's tacos, you have to find the price per taco in each case by dividing the amount paid by the number of tacos bought:

Noah: 15/10=1.5

Jada: 72/50=1.44

According to this, Jada's tacos were not the same price as Noah's tacos.

7 0
3 years ago
The manager of a grocery store wants to determine the average amount of money spent at his store as it compares to the average d
JulijaS [17]
For the manager's store

 Population size: 15
 Arithmetic mean (μ): 37.6
 Standard deviation (σ): 11,056

 For the competitor's store
 
 Population size: 15
 Arithmetic mean (μ): 48,533
 Standard deviation (σ): 28,356

 For the manager's store the average is a better representation of the data since it does not have Outlier points in the box diagram. Also the median is close to the average.

 For the competition store the average of the data collected is not as good representation of the data since they are dispersed from the mean with a standard deviation of 28.35. It also presents Outliers points in the box diagram, such as 112 which is very far from the average
7 0
3 years ago
Gabriel is making a mixture of compost and soil to use for a special plan he wants his final mix to be two part compost to 10 pa
kkurt [141]
Ten is mistakenly written by Tim in question.
Gabriel is making a mixture of compost and soil. In which he wants to mix 2 part compost to 10 parts potting soil. And he wants to end up with ten kilogram
It means compost is 2 pars out of 12 and potting soil is 10 parts out of 12
so, (2 / 12) x 10 kilogram of compost is used
= 1.66667 kilogram of compost Gabriel should use.

8 0
3 years ago
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