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ANEK [815]
3 years ago
13

Multiply r^2+7r+10/3 by 3 r-30/r^2-5r-50

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
4 0
R² + 7 r + 10 = r² + 2 r + 5 r + 10 = r ( r + 2 ) + 5 ( r + 2 ) = ( r + 2 ) ( r + 5 )
r² - 5 r - 50 = r² - 10 r + 5 r - 50 = r ( r - 10 ) + 5 ( r - 10 ) = ( r - 10 ) ( r + 5 )
\frac{r^{2} +7r+10}{3}* \frac{3r-30}{r ^{2}-5r-50 }= \\  \frac{(r+5)(r+2)}{3}* \frac{3(r-10)}{(r-10)(r+5)} = ( after cancellation ) = r + 2
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3 years ago
You loaned a friend $100 and will charge him 5% annual simple interest when he pay it back
Arturiano [62]

The amount of interest after 3 years will be $15.

The complete question is given below.

You loaned a friend $100 and will charge him 5% annual simple interest when he pay it back. What is the amount of interest after 3 years?

<h3>What is simple interest?</h3>

Simple interest is the concept that is used in many companies such as banking, finance, automobile, and so on.

The interest is given as

I = (P × R × T) / 100

Where, P is the initial amount, R is simple interest rate, and T is the time.

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T = 3 years

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I = (100 × 5 × 3) / 100

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More about the simple interest link is given below.

brainly.com/question/2793278

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Investment of $1,000 at 2% simple interest for 15 years
natima [27]
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3 years ago
A group of students made tacos for their class lunch. The number of tacos each student made is shown in the table.
nevsk [136]

Answer:

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-the ratio of the number of tacos Marta made to the number of tacos Manny made

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Step-by-step explanation:

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8 0
3 years ago
Rewrite as a square or a cube:<br><br> 3 3/8
STatiana [176]

Answer:

<h2>The Answer is 3/2 in cube number.</h2>

Step-by-step explanation:

<h3>3 3/8</h3><h3 /><h3>= 8 × 3 + 3 / 8</h3>

<h3>= 24 + 3 / 8</h3>

<h3>= 27 / 8</h3><h3 /><h3>= (3/2)^3</h3>

<h3> So , the answer is 3/2 in cube number.</h3>

Thank you ☺️☺️

3 0
4 years ago
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