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dusya [7]
4 years ago
13

Rearranging equations​

Mathematics
1 answer:
tatyana61 [14]4 years ago
7 0

Answer:Rearrange the equation so that the unknown variable is by itself on one side of the equals sign (=) and all the other variables are on the other side. RULE #1: you can add, subtract, multiply and divide by anything, as long as you do the same thing to both sides of the equals sign.

Step-by-step explanation:

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In 4 years, your son will be entering college and you would like to help financially. You decide to create a college fund and ma
avanturin [10]
The formula you can use for the withdrawals is that of an annuity. You have interest adding to the balance at the same time withdrawals are reducing the balance.

The formula I remember for annuities is
.. A = Pi/(1 -(1 +i)^-n) . . . . . i is the interest for each of the n intervals; A is the withdrawal, P is the initial balance.
This formula works when the withdrawal is at the end of the interval. To find the principal amount required at the time of the first withdrawal, we will compute for 3 withdrawals and then add the 7500 amount of the first withdrawal.
.. 7500 = P*.036/(1 -1.036^-3)
.. 7500 = P*0.357616
.. 7500/0.0347616 = P = 20,972.20
so the college fund balance in 4 years needs to be
.. 20,972.20 +7,500 = 28,472.20

Since the last payment P into the college fund earns interest, its value at the time of the first withdrawal is P*1.036. Each deposit before that earns a year's interest, so the balance in the fund after 4 deposits is
.. B = P*1.036*(1.036^4 -1)/(1.036 -1)
We want this balance to be the above amount, so the deposit (P) is
.. 28,472.20*0.036/(1.036*(1.036^4 -1)) = 6510.62

You must make 4 annual deposits of $6,510.62 starting now.
5 0
3 years ago
A tree is 44.55 feet tall. What is its height in meters?
eduard

Answer: 13.57884

Step-by-step explanation:

o

8 0
3 years ago
15 points ! precalc question with graph
Semmy [17]

x-intercepts are where the graph crosses the x-axis. These are (-1, 0) and (3, 0) from the graph.

y-intercepts are where the graph crosses the y-axis. This is (0, -3)  from the graph.

6 0
4 years ago
Read 2 more answers
If the side lengths of a cube are 16 feet, what is the correct way to write the expression to represent the volume of the cube i
VMariaS [17]
The expression for finding the volume of a cube is s^3 in this case it is 16^3 or 16*16*16
8 0
3 years ago
Read 2 more answers
The price of a train ticket consists of an initial fee of $5 plus a fee of $2.75per stop
mamaluj [8]

The complete question describes the use of word problems to represent inequalities. The $21 means that there is a limit to the number of stops she can take using the train.

The inequality that represents this scenario is:

5 + 2.75x \le 21

From the complete question, we have the following parameters:

Initial Fee = $5

Rate per stop = $2.75

Amount = $21

The inequality that represents the scenario is as follows:

Initial Fee + Rate * Number of stops <= Amount

We use <= because the total charges must not exceed the amount.

Let the number of stops be x.

The above formula becomes

5 + 2.75 * x \le 21

5 + 2.75x \le 21

Read more at:

brainly.com/question/16061085

7 0
3 years ago
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