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yaroslaw [1]
3 years ago
14

A new Community Wellness Complex is being built in Oak Valley. The perimeter of the rectangular playing field is 284 yards. The

length of the field is 5 yards less than double the width. What are the dimensions of the playing​ field?
Mathematics
1 answer:
SashulF [63]3 years ago
7 0

To solve this problem, we need to remember that the perimeter of a rectangle can be found using the formula: P = 2 (l + w) where the variable l represents the length of the rectangle and the variable w represents the width of the rectangle.

We know that the length of the field is 5 yards less than double the width, or 2w-5.  We can substitute this value into our formula for the variable l (length).

P = 2 (w + 2w - 5)

Now, we can substitute the value for the perimeter (284) into the equation for the variable p.

284 = 2 (w + 2w - 5)

Next, we should simplify what is inside the parentheses by adding together the like terms.

284 = 2(3w - 5)

Next, we should divide both sides of the equation by 2.

142 = 3w - 5

After that, we can add 5 to both sides of the equation.

147 = 3w

Finally, we should divide both sides of the equation by 3 to get the variable w alone on the right side of the equation.

w = 49

Therefore, the width of the rectangle is 49.  We know that the length is 5 yards less than double the width, or 2w - 5.  To solve for the length, we should substitute in our value for the width and simplify.

l = 2w - 5

l = 2(49) - 5

l = 98 - 5

l = 93

Therefore, the width of the rectangle is 49 yards and the length of the rectangle is 93  yards.

Hope this helps!

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4 + -35 * -6

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4 + 7 * -5 * -6 = 214

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How many liters each of a 35% acid solution and a 80% acid solution must be used to produce 60 liters of a 65% acid solution? (R
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Solving a system of equations we will see that we need to use <u>40 liters of the 80% acid solution</u>, and the other <u>20 liters are of the 35% acid solution</u>.

<h3>How many liters of each solution do we need to use?</h3>

First, we need to define the variables:

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We know that we want to produce 60 liters of 65% acid, then we have the system of equations:

x + y = 60

x*0.35 + y*0.80 = 60*0.65

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To solve this we need to isolate one of the variables in one equation and then replace it in other one, isolating x we get:

x = 60 - y

Replacing that in the other equation:

(60 - y)*0.35 + y*0.80 = 60*0.65

y*(0.80 - 0.35) = 60*(0.65 - 0.35)

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If you want to learn more about systems of equations:

brainly.com/question/13729904

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William invested $2,300 in an account paying an interest rate of 2 1/8% compounded quarterly. Nolan invested $2,300 in an accoun
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Answer:

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Step-by-step explanation:

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After 20 years, Nolan will have a total of $3,991.93

Difference = $478

William:

2300[1 + (.02125 ÷ 4)]^4 · 20

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2300(1.5278)

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2300(1.7356)

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Answer:

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12a³-6a²+27a+8a²-4a+18=

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If you need more explanation, reply to this answer.

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How many medians a triangle can have?
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\qquad \qquad\huge \underline{\boxed{\sf Answer}}

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