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shusha [124]
3 years ago
5

The area (A) of a circle with a radius of r is given by the formula and its diameter (d) is given by d = 2r. What is the correct

5 step sequence of equations to rewrite the formula for diameter in terms of the area of the circle?
Mathematics
1 answer:
liubo4ka [24]3 years ago
3 0
A= pi×r^2 r=(1/2)d
A=pi×(1/2)d×(1/2)d
A=pi×0.5d×0.5d
A=pi×(0.5)^2 × d^2
A=pi×0.25d^2
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Jaina and Tomas compare their compound interest accounts to see how much they will have in the accounts after three years. They
MariettaO [177]

The question is incomplete. The complete question is :

Jaina and Tomas compare their compound interest accounts to see how much they will have in the accounts after three years. They substitute their values shown below into the compound interest formula. Compound Interest Accounts Name Principal Interest Rate Number of Years Compounded Jaina $300 7% 3 Once a year Tomas $400 4% 3 Once a year. Which pair of equations would correctly calculate their compound interests?

Solution :

It is given that Jaina and Tomas wants to open an account by depositing a principal amount for a period of 3 years and wanted to calculate the amount they will have using the compound interest formula.

<u>So for Jiana</u> :

Principal, P = $300

Rate of interest, r = 7%

Time, t = 3

Compounded yearly

Therefore, using compound interest formula, we get

$A=P\left(1+\frac{r}{100}\right)^{t}$

   $=300\left(1+\frac{7}{100}\right)^{3}$

   $=300(1+0.07)^3$

<u>Now for Tomas </u>:

Principal, P = $400

Rate of interest, r = 4%

Time, t = 3

Compounded yearly

Therefore, using compound interest formula, we get

$A=P\left(1+\frac{r}{100}\right)^{t}$

   $=400\left(1+\frac{4}{100}\right)^{3}$

   $=400(1+0.04)^3$

Therefore, the pair of equations that would correctly calculate the compound interests for Jaina is $A=300(1+0.07)^3$ .

And the pair of equations that would correctly calculate the compound interests for Tomas is $A=400(1+0.04)^3$ .

8 0
3 years ago
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What is 1/2 of 2 3/4?
luda_lava [24]

Answer:

1 3/8

Step-by-step explanation:

First, change the mixed fraction to improper fraction.

2 3/4 = 8/4 + 3/4 = 11/4

1/2 of 11/4 = (11/4)(1/2) = 11/8

11/4 - 11/8 = 22/8 - 11/8 = 11/8

11/8, or 1 3/8 is your answer.

~

5 0
3 years ago
Guillermo bought some reams of paper for $10 each and a $100 printer. He spent a total of $450. Write and solve an equation to f
Paul [167]

Answer:

x = amount of paper

10x + 100 = 450

10x = 350

x = 35

Brainiest plz :)

8 0
2 years ago
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When the expression 3(n + 7) is evaluated for a given value of n, the result is 33. What is
trapecia [35]

Answer:4

Step-by-step explanation:What +7=11 bause the () make a multiplication and 11x3=33

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What is 10 pie × 3 9 cow to the power of 10 10ths
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The answer to this question is 21
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