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avanturin [10]
3 years ago
14

Find the area of the circle to the nearest tenth. use 3.14 for pie

Mathematics
2 answers:
vitfil [10]3 years ago
8 0
Hello,

<span>Find the area of the circle to the nearest tenth. use 3.14 for pie 
(4.4 is the other part)

</span>B 15.2
VikaD [51]3 years ago
3 0
I assume that 4.4 is the diameter,please do correct me if i am wrong.

To get the area of the circle,the formula is 丌r^2

to find the radius,we need ro devide the diameter by 2

thus the equations is
3.14  \times  ({4.4 \div 2})^{2}  \\  = 3.14 \times {2.2}^{2}  \\  = 15.196 \\  = 15.2(correct \: to \: the \: nearest \: tenth)
Therefore the answer is B.15.2

hope it helps!
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Answer:

she will write 72 songs in 27 months

Step-by-step explanation:

3 x 9 = 27

so do 8 x 9

you get 72

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expand
x^2 + y^2 -2ky + k^2 = 9

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compare to general form
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Bax invested a total of $2000 in two simple interest accounts. Account A earns 3% interest and Account B earns 5% interest. Bax
Svet_ta [14]

Bax invested a total of $2000 in two simple interest accounts. Account A earns 3% interest and Account B earns 5% interest. Bax earned a total of $75 interest after one year. How much did Bax invest in each account?

Let, The amount invested in Account A=x

Then, the amount invested in Account B=2000-x

The formula of Simple Interest =\frac{Principle*Rate*Time}{100}

Interest earned in Account A in 1 year=\frac{x*3*1}{100}

Interest earned by Account A=\frac{3x}{100}

Interest earned in Account B in 1 year=\frac{(2000-x)*5*1}{100}

Interest earned by Account B=\frac{5(2000-x)}{100}

Total Interest Earned= Interest earned by Account A+ Interest earned by Account B

Total Interest Earned=\frac{3x}{100}+\frac{5(2000-x)}{100}

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75=\frac{3x+10000-5x)}{100}

Multiply by 100 on both sides

75*100=\frac{100(10000-2x))}{100}

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Let us subtract 7500 from both sides

7500-7500=10000-7500-2x

0=2500-2x

Adding 2x on both sides, we get

0+2x=2500-2x+2x

2x=2500

To solve for x, divide by 2 on both sides

2x/2=2500/2

x=1250

So, The Amount invested in Account A= $1250

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