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Viefleur [7K]
3 years ago
9

Solve for r 5(r-10)=-51

Mathematics
2 answers:
Pie3 years ago
8 0

Answer:

r=−1/5

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

5(r−10)=−51

(5)(r)+(5)(−10)=−51(Distribute)

5r+−50=−51

5r−50=−51

Step 2: Add 50 to both sides.

5r−50+50=−51+50

5r=−1Step 3: Divide both sides by 5.

5r/5=−1/5

r=−1/5

Bad White [126]3 years ago
8 0

Answer:

<h2>r = - ¹/₅ or -0.2</h2><h2 />

Step-by-step explanation:

5(r - 10) = -51

5r - 50 = -51

5r = -51 + 50

5r = -1

r = - ¹/₅ or 0.2

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n > 13

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6 0
2 years ago
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a metal rod 9.4 meters long is cut into two piecew. One piece is 3 times as long as the other m. find the length of the longer p
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Hope I helped :D

Step-by-step explanation:

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A farmer is constructing a rectangular pen with one additional fence across its width. Find the maximum area that can be enclose
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The maximum area of the pen is the highest area the pen can have

The maximum area is 16200 square yards

Let the dimension be x and y.

So, the perimeter is given as:

\mathbf{P = 360}

Because it has one additional fence, the perimeter is calculated as:

\mathbf{2x + y = 360}

Make y the subject

\mathbf{y = 360 - 2x}

The area is calculated as:

\mathbf{A = xy}

Substitute \mathbf{y = 360 - 2x}

\mathbf{A = x(360 -2x)}

Expand

\mathbf{A = 360x -2x^2}

Differentiate

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Set to 0

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Rewrite as:

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\mathbf{x = 90}

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Hence, the maximum area is 16200 square yards

Read more about maximum areas at:

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Answer:

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Step-by-step explanation:

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