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iren [92.7K]
3 years ago
7

BEEEP Hhh, Math sucks ;-;

Mathematics
2 answers:
Alex3 years ago
8 0

Answer:

A is the answer.

Step-by-step explanation:

C=2πr

/2π /2π

C/2π=r

inessss [21]3 years ago
3 0

Answer:

A. r \:  =  \frac{C}{2\pi}

Step-by-step explanation:

\huge C = 2\pi  r \\ \\  \huge \red{  r \:  =  \frac{C}{2\pi} }

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What is 40% of 50% of 1200
hram777 [196]

Answer:

240 because first u have to figure out 40%of 50% and than 1200

Step-by-step explanation:

3 0
2 years ago
Mingfa says, "My sister and I have $130 altogether. If my mother gives me another
quester [9]

Given:

Total amount of Mingfa and her sister = $130

If Mingfa amount increased by $10, then the new amount is equal to three times of as much money as her sister.

To find:

How much money does Mingfa actually have?​

Solution:

Let, Mingfa have $x and her sister has $y initially. Then,

x+y=130                ...(i)

If Mingfa amount increased by $10, then the new amount is equal to three times of as much money as her sister.

x+10=3y              ...(ii)

Substitute the value of x from (ii) in (i).

(3y-10)+y=130

4y=130+10

4y=140

Divide both sides by 4.

y=35

Putting y=35 in (i), we get

x+35=130

x=130-35

x=95

Therefore, Mingfa have $95.

8 0
2 years ago
QUESTIONNNNNNNNNN!!!!
Lemur [1.5K]

Answer:

4 i think

Step-by-step explanation:

3 0
2 years ago
write a formula that describes the value of an initial investment of $100 that loses value at a rate of 8% per year compounded c
Sati [7]

Answer:

A = 100(.92)^{t}

Step-by-step explanation:

5 0
2 years ago
Find the annual rate of interest. Principal = 4600 rupees Period = 5 years Total amount = 6440 rupees Annual rate of interest =
Semmy [17]

Answer:

The rate of interest for compounded annually is 6.96 %  .

Step-by-step explanation:

Given as :

The principal amount = Rs 4600

The time period = 5 years

The amount after 5 years = Rs 6440

Let The rate of interest = R %

<u>From compounded method</u>

Amount = Principal × (1+\dfrac{\textrm rate}{100})^{\textrm Time}

or, Rs 6440 = Rs 4600 × (1+\dfrac{\textrm R}{100})^{\textrm 5}

Or, \frac{6440}{4600} =  (1+\dfrac{\textrm R}{100})^{\textrm 5}

or, 1.4 =  (1+\dfrac{\textrm R}{100})^{\textrm 5}

Or, (1.4)^{\frac{1}{5}} = 1 + \dfrac{R}{100}

or, 1.0696 =  1 + \dfrac{R}{100}

or, \dfrac{R}{100} = 1.0696 - 1

Or, \dfrac{R}{100} = 0.0696

∴ R = 0.0696 × 100

I.e R = 6.96

Hence The rate of interest for compounded annually is 6.96 %  .  Answer

5 0
2 years ago
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