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Alexxx [7]
3 years ago
14

1. Mr. Davis deposited $1,250 into an account. He made no additional deposits or withdrawals. Mr. Davis earned 4.25% annual simp

le interest on the money in the account. What was the balance in dollars and cents in Mr. Davis’ account at the end of 4 years? (Use your STAAR chart to find formula)
Mathematics
1 answer:
notsponge [240]3 years ago
4 0

Answer:

At the end of 4 years, Mr Davis will have $1462.50 in his account

Step-by-step explanation:

Simple Interest SI = (Principal P × Rate R × Time T)/100

SI = (P × R × T)/100

P = $1250, R = 4.25%, T = 4 years

SI = ($1250 × 4.25 × 4)/100

SI = (21250)/100

SI = $212.50

The balance will therefore be

$1250 + $212.50 = $1462.50

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Ierofanga [76]

Step 1: Simplify both sides of the equation.

−36=p−30

Step 2: Flip the equation.

p−30=−36

Step 3: Add 30 to both sides.

p−30+30=−36+30

p=−6

7 0
3 years ago
If 5.7×10^k= 570,000, what is the value of k?
antiseptic1488 [7]

Answer:

5

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3 years ago
The blades of a windmill turn on an axis that is 35 feet above the ground. The blades are 10 feet long and complete two rotation
Alona [7]

Answer:

h = 10sin(π15t)+35

Step-by-step explanation:

The height of the blade as a function f time can be written in the following way:

h = Asin(xt) + B, where:

B represets the initial height of the blade above the ground.

A represents the amplitud of length of the blade.

x represents the period.

The initial height is 35 ft, therefore, B = 35ft.

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The period is two rotations every minute, therefore the period should be 60/4 = 15. Then x = 15π

Finally the equation that can be used to model h is:

h = 10sin(π15t)+35

5 0
3 years ago
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Answer:

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Step-by-step explanation:

4 0
3 years ago
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