3 years ago

If you know that 4 of an item cost a certain amount, and you want to find out what one costs, which operation will you use?

Mathematics

2 answers:

Sauron [17]3 years ago

6 0

Answer:

DIVISION

Step-by-step explanation:

aev [14]3 years ago

4 0

You divide the total cost of the 4 items by 4 to find the cost on 1 item.

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Find the center and radius of this circle.<br> x2 + y2 − 40x − 24y + 15 = 0

Julli [10]

ANSWER

Center: (20,12)

Radius:23

EXPLANATION

The given circle has equation:

${x}^{2} + {y}^{2} - 40x - 24y + 15 = 0$

We complete the square as follows:

${x}^{2} - 40x + {y}^{2} - 24y = - 15$

${x}^{2} - 40x + {( - 20)}^{2} + {y}^{2} - 24y + {( - 12)}^{2} = - 15+ {( - 20)}^{2}+ {( - 12)}^{2}$

${(x - 20)}^{2} + {(y - 12)}^{2} = - 15+ 400+ 144$

${(x - 20)}^{2} + {(y - 12)}^{2} = 529$

${(x - 20)}^{2} + {(y - 12)}^{2} = {23}^{2}$

Comparing this equation to:

${(x - h)}^{2} + {(y - k)}^{2} = {r}^{2}$

We have

$(h,k)=(20,12)$

representing the center and

$r = 23$

being the radius.

5 0

3 years ago

Pls, help! will give brainliest if right, and who you got it!

Anna71 [15]

Answer:

-5/4

Step-by-step explanation:

(-2,5) (2,0)

0 - 5 / 2 - (-2)

-5 / 2- (-2)

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Shylan's vegetable garden is florishing. She has 20 plants in her garden which are broken into equal rows. 1/5 of the rows are c

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Answer:

Step-by-step explanation:

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Need help!! plzz help

Alex

Answer:

it's 18

Step-by-step explanation:

because

3×9=18

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Answer:

True

Step-by-step explanation:

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4 years ago

Read 2 more answers