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Andrei [34K]
3 years ago
13

You are saving money to buy a used car. You deposit $2,500 in an account that earns interest compounded annually. The expression

2500(1+r)^2 represents the balance after 2 years, where r is the annual interest rate in decimal form
Mathematics
1 answer:
seraphim [82]3 years ago
6 0

Answer:

r= [(\frac{A}{2500}) ^\frac{1}{2} -1]

Step-by-step explanation:

Given data

Principal = $2500

time t= 2 years

Required

the rate r

Given the expression for the balance 2500(1+r)^2

Hence

A= 2500(1+r)^2

we can make r subject of formula

r= [(\frac{A}{P}) ^\frac{1}{t} -1]

r= [(\frac{A}{2500}) ^\frac{1}{2} -1]

Hence, for any value of A, we can find the rate using the expression above

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Julio has $150. Each week, he saves an additional $10.Write a function ()that models the total amount of money Julio has after w
nadya68 [22]

Answer:

The function that models the total amount of money Julio has after weeks is:

f(x)=150+10x, where:

x is the number of weeks

Step-by-step explanation:

With the information provided,  you can say that the total amount of money Julio has would be equal to the initial amount he has plus the result of multiplying the $10 that he saves every week for the number of weeks, which can be expressed as:

f(x)=150+10x, where:

x is the number of weeks

4 0
3 years ago
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Find the inverse of the equation y=2/3x-6
nlexa [21]

Answer:

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Step-by-step explanation:

<h3> your answer is y = 3x+6/2</h3>

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3 years ago
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there are 32 students in 4th grade class.Each table in the classroom seats 6 students.how many tables will be needed
vagabundo [1.1K]
This question wants you to divide 32 tables by 6 students which is 5.3333. Since 5 tables is not enough, 6 tables are needed.
3 0
3 years ago
What is the average (arithmetic mean) of the first 90 measurements in a certain list of 92 measurements? (1) the average of the
marishachu [46]
The sum of all the measurements is just the average times the number.

\bar x = \frac{1}{n} \sum_{i=1}^n x_i

\sum_{i=1}^n x_i = n \bar x

So if the average of all 92 is 7 the sum of those is 92 \times 7

The average of the last two is 7.2 so their sum is 2 \times 7.2

That means the sum of the first 90 is 92 \times 7 - 2 \times 7.2

so the average of the first 90 is

 \dfrac{92 \times 7 - 2 \times 7.2}{90} = 6.99556 cm



7 0
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You start at (10, 2). you move up 2 units and down 4 units. where do you end?
DochEvi [55]
You end up at (10,0)
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3 years ago
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