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777dan777 [17]
3 years ago
8

Someone help me fast please

Mathematics
1 answer:
lions [1.4K]3 years ago
4 0

Answer:

86

Step-by-step explanation:

<u>Perimeter of WXY = WSY+WRX+XY</u>

<em>--> WSY = SY x 2</em>

--> WSY = 16 x 2 = 32

<em>Since it is an isosceles triangle, WRX = WSY</em>

--> WRX = 32

<em>--> Draw a straight line from W to XY to divide it into two halves assuming it to be point A. This would form a right angle triangle of WAX.</em>

<em>--> Solve it using the cos theta rule</em>

--> Angle = Angle X = 70°

    Hypotenuse = WRX = 32

    Adjacent = WA = ?

<em>--> Cos (Angle) = Adjacent/Hypotenuse</em>

    Cos (70) = WA/32

    WA = 10.9 rounded off to 11

--> WA=AY= 11

--> XY = WA + AY = 11+11 = 22

<em>--> Perimeter = WSY+WRX+XY</em>

    Perimeter = 32+32+22

    Perimeter = 86

Therefore, the perimeter of WXY is 86.

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Johanna, Elizabeth, and Dan are preparing a chemical solution for a research project. When
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Using the together rate, it is found that they would prepare the solution in 1.71 minutes working together.

<h3>What is the together rate?</h3>

It is the sum of each separate rate.

In this problem, the rates are given by:

  • Johanna's: 1/6.
  • Elizabeth's: 1/6.
  • Dan's: 1/4.

Hence the together rate is given by:

\frac{1}{x} = \frac{1}{6} + \frac{1}{6} + \frac{1}{4}

\frac{1}{x} = \frac{1}{3} + \frac{1}{4}

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They would prepare the solution in 1.71 minutes working together.

More can be learned about the together rate at brainly.com/question/25159431

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Use the elimination method to solve the system of equations. Choose the correct ordered pair.
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For this problem I would change:

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Then, I would add up both equations by lining them up top of another.

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Now that you have x, solve for y.

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So, x is 2 and y is 7.

Check to see if the values are correct by plugging them into the other equation.

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Since the values are correct, the solution to this problem is A (2, 7).


7 0
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