Answer:
30$
Step-by-step explanation:
1st sister is 3x
2nd sister 2x
3th is x
3x+2x+x=180
6x=180
X=30
Answer:

Let's start by breaking down the problem.
This is how it should look. ↓
÷
⇒
⇒ 
What does that <em>x</em> mean? <em>x</em> is just a substituted value for the first 2 equations.
Now, we can solve.
÷

Add 3

Now, multiply 6 times 5 squared. What does 5 squared mean? 5 squared is just 5 times itself once. You most likely want to solve 5 squared before multiplying.

And now for the last step, multiply 25 times 6

With that information, the problem is solved! Your answer is 150
Using the interest formulas, it is found that the values of the investment are given as follows:
- Using simple interest, the value will be of $34,000.
- Using compound interest, the value will be of $144,461.
- Using continuous compounding, the value will be of $148,002.
<h3>Simple Interest</h3>
Simple interest is used when there is a single compounding per time period.
The amount of money after t years in is modeled by:

In which:
- r is the interest rate, as a decimal.
In this problem, we have that the parameters are as follows:
P = 9000, r = 0.07, t = 40.
Hence:

<h3>Compound interest</h3>

n is the number of compounding, for quarterly n = 4, then:


<h3>Continuous compounding</h3>

Hence:

More can be learned about the interest formulas at brainly.com/question/25296782
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The answer is C. |-31|=3
The absolute value of -31 should’ve been 31 not 3
When two lines cross, there are four angles at the place where they cross.
Two angles that do NOT share a side are vertical angles. There are two pairs
of vertical angles where the lines cross.
Also, by the way, vertical angles are always equal to each other. It's often
very helpful to know that.