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dimaraw [331]
3 years ago
12

Stella invested $42,000 in an account paying an interest rate of 4 7/8% compounded quarterly. Chloe invested $42,000 in an accou

nt paying an interest rate of 4 1/2% compounded annually. To the nearest dollar, how much money would Stella have in her account when Chloe's money has tripled in value?
Mathematics
1 answer:
Nuetrik [128]3 years ago
5 0

Answer: Stella would have $15036 more than Chloe.

Step-by-step explanation:

We would apply the formula for determining compound interest which is expressed as

A = P(1+r/n)^nt

Where

A = total amount in the account at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount deposited

Considering Chloe's investment,

P = 42000

r = 4.5% = 4.5/100 = 0.045

n = 1 because it was compounded once in a year.

A = 42000 × 3 = 126000

Therefore,.

126000 = 42000(1 + 0.045/1)^1 × t

126000/42000 = (1.045)^t

3 = (1.045)^t

Taking log of both side,

Log3 = tlog1.045

0.4771 = 0.019t

t = 0.4771/0.019

t = 25.11

Approximately 25 years

Considering Stella's investment,

t = 25

P = 42000

r = 4.875% = 4.875/100 = 0.04875

n = 4 because it was compounded 4 times in a year.

Therefore,

A = 42000(1 + 0.04875/4)^4× 25

A = 42000(1 + 0.0121875)^100

A = 42000(1.0121875)^100

A = 42000 × 3.358

A = $141036

The difference in amount would be

141036 - 126000 = $15036

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Triangle EFG is dilated by a scale factor of 3 centered at (0, 1) to create triangle E'F'G'. Which statement is true about the d
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Segment EH and segment E prime H prime both pass through the center of dilation (A)

The complete question related to this found on brainly (ID:16812154) is stated below:

Triangle EFG is dilated by a scale factor of 3 centered at (0, 1) to create triangle E'F'G'. Which statement is true about the dilation?

E(0,5) F(1,1) G(-2,1) H(0,1)

a) segment EH and segment E prime H prime both pass through the center of dilation.

b)The slope of segment EF is the same as the slope of segment E prime H prime.

c) segment E prime G prime will overlap segment EG. segment

d) EH ≅ segment E prime H prime.

Step-by-step explanation:

∆EFG = Original image

∆EFG is dilated to give ∆E'F'G'

∆E'F'G' = New image

Scale factor = 3

Center of dilation = (0,1) = H(0,1)

Coordinates ∆EFG : E(0,5) F(1,1) G(-2,1)

To determine the statement that is true about the dilation from the options,

First we would make a diagram on the coordinates of ∆EFG and center of dilation (H).

Find attached the diagram.

Length GF = 3unit

Length G'F' = 3×scale factor = 9unit

Length EH = 4unit

Length E'H' = 4×scale factor = 12unit

Then we would move 3units to the left on same line from G to get the coordinate of G'(mark the point).

Also move 3units to the right on same line from F to get the coordinate of F'(mark the point).

Both of these give length of G'F' = 9unit

Now move 8units to the top from E to get the coordinate of E'(mark the point).

From this you get length E'H' = 12unit

Draw lines connecting the three points to get ∆E'F'G'

See diagram for better understanding

From the diagram, EH and E'H' both pass through (0,1). The other options are wrong.

Therefore, Segment EH and segment E prime H prime both pass through the center of dilation (A)

5 0
3 years ago
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