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Nina [5.8K]
3 years ago
13

Solve for r write the answer in simplified form 7 = - 7r

Mathematics
1 answer:
alex41 [277]3 years ago
3 0

Answer:

r = -1

Step-by-step explanation:

To get r isolated, you have to divide each side by -7

7 divided by -7 is -1, therefore r = -1

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How do i convert 91/10 to a mixed number
geniusboy [140]
The fraction 91/10 is equivalent1 to 9 1/10.
This fraction is a IMPROPER FRACTION once the absolute value of the top number or numerator (91) is greater than the absolute value of the bottom number or denomintor (10). So, the equivalent fraction is a MIXED NUMBER which is made up of a whole number (9) and proper fraction (1/10).
<span>The fraction 91/10 is equal to 91÷10 and can also be expressed in decimal form as 9.1.</span>
7 0
3 years ago
A used book store buys a hardback book for $1.50 and then sells it for $5. Over time, the store sells the same number of books i
dybincka [34]

A used book store buys a hardback book for $1.50 and then sells it for $5. Over time, the store sells the same number of books it buys. The store manager can use the equation P(x)=5x−1.5x to determine the store's profit, P(x), where x is the number of books that the store sells. Which statement about the book store is true based on the profit equation?

Cost Price of book, C.P.=$1.50

Selling Price of book, S.P.=$5

PROFIT=S.P. -C.P.

So, Profit=$5-$1.50=$3.50

So, Profit=$3.50 on each book

Or, we are given P(x)= 5x-1.50x

Or, P(x)=3.50x

For each book, we must divide the profit P(x) by x, that is, number of books

\frac{P(x)}{x}=\frac{3.5x}{x}

\frac{P(x)}{x}=\frac{3.5*1}{1}

\frac{P(x)}{x}=3.5

So, Profit for each book sold is $3.50

Answer:Option C

8 0
3 years ago
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kow [346]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
What is LP ? <br><br> A. 36<br> B. 40<br> C. 44<br> D. 48<br> E. 52
Sonbull [250]

Answer:

The correct answer is option D.  48

Step-by-step explanation:

From the figure we can see that, some right angled triangles.

<u>To find the measure of LP</u>

Consider the right angled  triangle LPT,

LT is the hypotenuse, LP = 50 units  (given)

PT = QT = RT = 14 units

From figure we get,

LP² + PT² = LT²²

LP² = LT² - PT²

 = 50² - 14²

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 = 2304

LP =√2304

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The correct answer is option D.  48

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4x + 2y <= 30

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2 years ago
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