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3 years ago

14

A package of 4 mechanical pencils comes with 2 free erasers and if you get a total of 12 eraser how many packages of pencils did

you buy

1 answer:

r-ruslan [8.4K]3 years ago

5 0

Six packages were bought. Just count by 2's until you reach 12.

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John invests $250 at 15% interest compounded monthly. How much will he have in 20 years?

atroni [7]

Answer:

$4928.87

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Algebra I</u>

Compounded Interest Rate Formula: $\displaystyle A = P(1 + \frac{r}{n})^{nt}$

<em>P</em> is principle amount
<em>r</em> is rate
<em>n</em> is compound rate
<em>t</em> is time

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify variables</em>

<em>P</em> = 250

<em>r</em> = 15% = 0.15

<em>n</em> = 12

<em>t</em> = 20

<u>Step 2: Solve</u>

Substitute in variables [Compounded Interest Rate Formula]: $\displaystyle A = 250(1 + \frac{0.15}{12})^{12 \cdot 20}$
[Exponents] Multiply: $\displaystyle A = 250(1 + \frac{0.15}{12})^{240}$
(Parenthesis) Divide: $\displaystyle A = 250(1 + 0.0125)^{240}$
(Parenthesis) Add: $\displaystyle A = 250(1.0125)^{240}$
Evaluate exponents: $\displaystyle A = 250(19.7155)$
Multiply: $\displaystyle A = 4928.87$

5 0

3 years ago

Help I don’t understand the first part but understand the second

Lunna [17]

Answer:

Step-by-step explanation:

Complete the square

$x^{2}$ + 2x - 13 = 0

$x^{2}$ + 2x = 13

$x^{2}$ + 2x + $1^{2}$ = 13 +1 (take 1/2 of the b term , the 2 )

$x^{2}$ + 2x + 1 = 14

(x +1)^2 = 14

4 0

3 years ago

Read 2 more answers

If randy earns $12.74 per hour, what is his overtime rate? How much should randy make if he works 45 1/2 hours during 1 week?

elena-14-01-66 [18.8K]

Answer:

$19.24 is the overtime rate $579.67 one week

Step-by-step explanation:

So $13.00 its $19.50 so I subtracted $12.74 to $13.00 got 0.26 then subtracted $19.50 by 0.26 and got $19.24

$12.74 times 45.5 that will be $579.67 for just one week

If I didn't get it right. Tell me in the comments. I think I got it right.

8 0

3 years ago

Round 23,556 to the nearest ten thousand

Leona [35]

20,000 because of the rule 5 or above. 3,556 would be rounded down making your number 20,000

8 0

3 years ago

Read 2 more answers

Jayne is taking two AP classes and three regular classes. Her AP classes count twice as much as her regular classes in her GPA.

miv72 [106K]

Frist off what the heck is GPA second I think it's D. 3.0

8 0

4 years ago