3 years ago

Find the surface area of a sphere with radius, r= 12 in.

Mathematics

1 answer:

zvonat [6]3 years ago

8 0

1809.56

just plug it in the surface area formula of a sphere and do the math

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A bread recipe calls for 1/3 cup of butter. You want to make 1/2of a batch.

nordsb [41]

It would be 1/2 times 1/3 to get 1/6 cups of butter.

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3 years ago

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Mason has a checking account. The bank charges 65¢ for each debit card transaction, 30¢ for each check he writes, and $2.50 for

Digiron [165]

Because Mason tried to balance $2.50 in is check register

hope that helps you

7 0

3 years ago

What is a quotient of a number and 15?

Alenkinab [10]

Answer:450 i think

Step-by-step explanation:

Quotient' means you will divide the numbers.

Also, to be 'no greater' means to be 'less than or equal to'.

6 0

3 years ago

I'll name you the BRAINIEST if you can answer this.The scale factor for a model is 18 cm

bezimeni [28]

Answer:

32.625 m

Step-by-step explanation:

You have the proportion ...

18 cm : ___ m = 22.4 cm : 40.6 m

This can be rearranged to ...

___ m/(18 cm) = (40.6 m)/(22.4 cm)

Multiplying by 18 cm gives ...

___ m = (40.6 m)·(18/22.4)

___ m = 32.625 m

6 0

3 years ago

The circle given by : x^2 + y^2 - 6y - 12 = 0 can be written as:

deff fn [24]

Step-by-step explanation:

Given equation of circle is,

${x}^{2} + {y}^{2} - 6y - 12 = 0 \\ by \: compairing \: it \: with \: \\ {x}^{2} + {y}^{2} + 2gx + 2fy = 0 \: we \: get \\2 g = 0 \: or \: g = 0 \\ 2f= - 6 \\ or \: f= - 3 \\ c = - 12$

again the another form of circle is,

${x}^{2} + {(y - k)}^{2} = 21 \\ or \: {x}^{2} + {y}^{2} - 2ky + {k}^{2} - 21 = 0 \\ by \: compairing \:it \: with \: \\ {x}^{2} + {y}^{2} + 2gx + 2fy = 0 \: we \: get \\ g = 0 \\f = - k \\ c = {k}^{2} - 21$

now equating the values of f in both equations,

-k=-3

i.e. k=3

therefore k=3

4 0

3 years ago