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zalisa [80]
2 years ago
7

This year, Mrs. Fisher has 9 students who are new to the school. The number of new students represents 7.5% of all her students.

Which equation could be used to determine x, the total number of students Mrs. Fisher has this year.
Mathematics
1 answer:
Lelu [443]2 years ago
5 0
7.5\% \text { of } x = 9 \text { students}

0.75 \times x = 9 \text { students}

0.75x = 9
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There are 59 people going on a field trip.
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$1500 is invested at a rate of 3% compounded monthly. Write a compound interest function to model this situation. Then find the
Marianna [84]

Answer:

<u>Equation</u>:  F=1500(1.0025)^{12t}

<u>The balance after 5 years is:  $1742.43</u>

<u></u>

Step-by-step explanation:

This is a compound growth problem . THe formula is:

F=P(1+\frac{r}{n})^{nt}

Where

F is future amount

P is present amount

r is rate of interest, annually

n is the number of compounding per year

t is the time in years

Given:

P = 1500

r = 0.03

n = 12 (compounded monthly means 12 times a year)

The compound interest formula modelled by the variables is:

F=1500(1+\frac{0.03}{12})^{12t}\\F=1500(1.0025)^{12t}

Now, we want balance after 5 years, so t = 5, substituting, we get:

F=1500(1.0025)^{12t}\\F=1500(1.0025)^{12*5}\\F=1500(1.0025)^{60}\\F=1742.43

<u>The balance after 5 years is:  $1742.43</u>

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2 years ago
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blagie [28]

Answer:

a) 96/16÷6

b) 31.25/ (2.5)^2=5

c) = V/ pi r^2

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2 years ago
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