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3 years ago

Pamela deposited $30 in a savings account earning 5% interest, compounded annually.

1 answer:

4 0

$\bf ~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\dotfill & \$30\\ r=rate\to 5\%\to \frac{5}{100}\dotfill &0.05\\ t=years\dotfill &3 \end{cases} \\\\\\ I=(30)(0.05)(3)\implies I=4.5$

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Add 5/9+7/9 . Simplify the answer and write a mixed number

Step2247 [10]

Hello there!

First you had to solving by the fractions parts.

$\frac{5}{9}+\frac{7}{9}=\frac{12}{9}$

Then you reducing by the fraction parts of 12/9.

$\frac{12}{9}=\frac{4}{3}$

And finally, you simplify by the fraction parts of 4/3.

$\frac{4}{3}=1 \frac{1}{3}$

Solution by Formulas

Applying the fractions formula for addiction.

$\frac{(5*9)+(7*9)}{9*9}$

$\frac{45+63}{81}$

$=\frac{108}{81}$

Simplifying 108/81 and the answer is

$=1 \frac{1}{3}$

Hope this helps!

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-Charlie

3 0

4 years ago

Read 2 more answers

the width of a rectangle is 8cm less then its length the perimeter of the rectangle is 52 cm. what is the width of the rectangle

BartSMP [9]

P=2L+2a
w=L-8, P=52
52=2L +2(L-8)
52=4L-16
68=4L
L=17, w=9

4 0

3 years ago

The measurement of the radius of the end of a log is found to be 9 inches, with a possible error of 1/2 inch. Use differentials

enot [183]

Answer:

$\pm 9in^2$

Step-by-step explanation:

We are given that

Radius of end of a log, r= 9 in

Error, $\Delta r=\pm 1/2$ in

We have to find the error in computing the area of the end of the log by using differential.

Area of end of the log, A= $pi r^2$

$\frac{dA}{dr}=2\pi r$

$\frac{dA}{dr}=2\pi (9)=18\pi in^2$

Now,

Approximate error in area

$dA=\frac{dA}{dr}(\Delta r)$

Using the values

$dA=18\pi (\pm 1/2)$

$\Delta A\approx dA=\pm 9in^2$

Hence, the possible propagated error in computing the area of the end of the log $=\pm 9in^2$

6 0

3 years ago

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Find the height of a cylinder whose diameter is 42 cm and the area of its curved

Wittaler [7]

9514 1404 393

Answer:

90 cm

Step-by-step explanation:

The lateral area of a cylinder is given by the formula ...

LA = πdh

Filling in the given information, we can solve for h:

11,880 cm^2 = π(42 cm)h

h = 1180 cm^2/(42π cm) ≈ 90.0 cm

The height of the cylinder is about 90 cm.

7 0

3 years ago

Hello please help me, i am in middle school, i failed two classes last semester and i failed one class this semester, will i flu

maks197457 [2]

Answer:

u should be fine. if anything summer school should help you. college does not care about your middle school grades but you should try your hardest to pass. You have to at least pass

Step-by-step explanation:

8 0

3 years ago

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