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Crazy boy [7]
3 years ago
7

The length of a rectangle is 4 cm longer than its width. If the perimeter of the rectangle is 40 cm, find its area

Mathematics
1 answer:
mel-nik [20]3 years ago
3 0

Answer:

96

Step-by-step explanation:

The length of a rectangle is 4 cm longer than its width. If the perimeter of the rectangle is 40 cm, find its area

width + 4 = length

width = width

2l + 2w = p

width+width +width +width +4 +4 = 40

4width +8  = 40

4width =  32

width = 8

length x width = area

width = 8

length = 12 (width + 4)

12x 8 =  96

<h2><u><em>have a great day! I hope this helped! :)</em></u></h2>

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Solve the system of linear equation 8X plus 5Y equals 18 and 6X plus Y equals -2 by using the linear Combination method Emmaus d
Hunter-Best [27]

\text{The solution is } x = \frac{-14}{11} \text{ and } y = \frac{62}{11}

<em><u>Solution:</u></em>

<em><u>Given system of equations are:</u></em>

8x + 5y = 18 ------- eqn 1

6x + y = -2 -------- eqn 2

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Divide both sides by -22

x = \frac{28}{-22}\\\\x = \frac{-14}{11}

Substitute the x value in eqn 1

8(\frac{-14}{11}) + 5y = 18\\\\\frac{-112}{11} + 5y = 18\\\\5y = 18 + \frac{112}{11}\\\\5y = \frac{310}{11}\\\\y = \frac{62}{11}

\text{Thus the solution is } x = \frac{-14}{11} \text{ and } y = \frac{62}{11}

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3 years ago
How many solutions does this equation have?<br> 8−2(n+3)=n+7−3n
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We add all the numbers together, and all the variables

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We multiply parentheses

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We get rid of parentheses

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Answer:

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Step-by-step explanation:

To find the distance between any two points, we can use the distance formula:

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Our first point, A, is at (1, 1) and our second point, B, is at (-2, 8).

Let's let A(1, 1) be (x₁, y₁) and B(-2, 8) be (x₂, y₂). Substitute this into the distance formula:

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Subtract:

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Add:

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And we're done!

So... where's my cookie :)?

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