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3 years ago

I need help I don’t know how to do this

Mathematics

1 answer:

Law Incorporation [45]3 years ago

5 0

Answer:

its about checkers cou nt and answer

Step-by-step explanation:

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The ratio of boys to girls in a class is 3:4. There are 35 students in the class. How many students are girls?

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There would be 20 girls

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Samuel is playing the Big-Time Builders video game. At the beginning of Samuel's turn, his score was

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Because at the beginning samuel score was 14 points but when he continue buiding a high-rise-apartment building then his score rose to 36 point, then we add the two together then it give us 50

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3 years ago

Danny decided to invest his $500 tax refund rather than spending it. He found a bank that would pay him 4% interest, compounded

Blababa [14]

Present value, PV = $500
Future value, FV = 2*PV = 2*500 = $1,000
Rate, r = 4% = 0.04
Compounding times in a year, n = 4 (compounded quarterly)
Time, t = ??

The future value expression is stated as:
FV = PV (1+r/n)^nt

Substituting;
1000 = 500 (1+0.04/4)^4t
2 = (1.01)^4t
ln 2 = 4t ln 1.01
0.6931 = 4t* 0.00995
0.6931 = 0.0398t
t = 17.414 years

Time required for the amount to double is 17.41 years.

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3 years ago

James and Terry open a savings account that has a 2.75% annual interest rate, compounded monthly. They deposit $500 into the acc

katovenus [111]

Answer:

<h2>Option A is the answer(here the answer is calculated taking the whole value, without approximating it to a nearest value)</h2>

Step-by-step explanation:

Annual interest rate is 2.75%. Hence, the monthly interest rate is $\frac{2.75}{12}$

The amount will be compounded $(20\times12) = 240$ times.

Every month they deposits $500.

In the first month that deposited $500 will be compounded 240 times.

It will be $500\times [1 + \frac{2.75}{1200} ]^{240}$

In the second month $500 will be deposited again, this time it will be compounded 239 times.

It will give $500\times [1 + \frac{2.75}{1200} ]^{239}$

Hence, the total after 20 years will be $500\times [1 + \frac{2.75}{1200} ]^{240} + 500\times [1 + \frac{2.75}{1200} ]^{239} + ........+ 500\times [1 + \frac{2.75}{1200} ]^{1} = 160110.6741$

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3 years ago

Easy 10 points for the day a challenge question will be given out by me every day so here is the first on. -7+7x30+101/2. There

Ksju [112]

The answer is 131/2 that is the answer

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3 years ago