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3 years ago

In the diagram below, the radii of the two concentric circles are 3 centimeters and 7 centimeters, respectively.

Mathematics

2 answers:

V125BC [204]3 years ago

7 0

I do believe the answer is 41pi cm2

hammer [34]3 years ago

5 0

Answer: 40 pi cm^2

Step-by-step explanation: the area of a circle is pi*r^2. the shaded region is the area of the large circle minus the area of the small circle. the larger circle has an area of 49pi and the smaller circle has an area of 9pi. 49pi-9pi is 40pi cm^2

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Seth has a bank account which pays 1.01% interest, compounded quarterly. Seth withdraws $4,567 from the account every quarter fo

dimulka [17.4K]

Answer:

C. $538,021.66

Step-by-step explanation:

It is given that the money Seth withdraws was compounded every quarter for 35 years. So, we get,

Amount withdrawn every quarter, P = $4567

Rate of interest, r = $\frac{0.0101}{4}$ = 0.002525

Time period, n = 35 × 4 = 140

Now, as we know the formula for annuity as,

$P=\frac{r \times PV}{1-(1+r)^{-n}}$

where P = installments, PV = present value, r = rate of interest and n = time period.

This gives, $PV=\frac{P \times [1-(1+r)^{-n}]}{r}$

i.e. $PV=\frac{4567 \times [1-(1+0.002525)^{-140}]}{0.002525}$

i.e. $PV=\frac{4567 \times [1-(1.002525)^{-140}]}{0.002525}$

i.e. $PV=\frac{4567 \times [1-0.7021]}{0.002525}$

i.e. $PV=\frac{4567 \times 0.2975}{0.002525}$

i.e. $PV=\frac{1358.68}{0.002525}$

i.e. $PV=538,091.08$

So, the closest answer to initial value of the account is $538,021.66

Hence, option C is correct.

6 0

4 years ago

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What is 82.2% of 50?

umka21 [38]

The answer to 82.2% of 50 is 41.1

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4 years ago

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Jose bought 6 chicken wings for $2. What was the cost of the wings in wings per dollar? Express your answer in simplest form.

pogonyaev

Answer:

0.5$each

Step-by-step explanation:

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3 years ago

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The cab ride for the dulles airport to the hotel was 15 miles. The total cost of the cab ride was $25.50. The cabbie charges $1.

natali 33 [55]

The total cost of the cab ride was $25.50. The cabbie charges $1.50 per mile the entire trip.

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3 years ago

Students in the school band are selling calendars they earn 0.40 on each calendar They sell. Their goal is to earn more than 327

Alexxandr [17]

Answer:

130.8

Step-by-step explanation:

i just think that you times 0.40 and 327 and then press = and it should give you 130.8

i hope it works

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4 years ago