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Black_prince [1.1K]
3 years ago
10

Can anyone answer (b)

Mathematics
1 answer:
lana [24]3 years ago
8 0
The problem is, I don't think that you estimated for letter a, so you can't do letter b.
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Solve the triangle for x.
nalin [4]

Answer:

90.4°

Step-by-step explanation:

Use Law of Cosines to solve:

12² = 9² + 8² - 2(9)(8)Cos X

  144 = 81 + 64 - 144Cos X

     -1 = -144Cos X

         -1/144 = Cos X

            Cos^-1 (-1/144) = X

                     X = 90.39789056°

8 0
3 years ago
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The number of boys if the total height would of the boys is 16.4 meters and their average height is 1.2 meters
galben [10]
Number of boys= 16.4÷ 1.2=13
3 0
3 years ago
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dem82 [27]
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3 years ago
Use elimination to solve each system if equation 3x+2y=0and x-5y=17
kotykmax [81]

Answer:

y = -3

x=2

Step-by-step explanation:

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to use the elimination you have to make one of the numbers same

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and you would have to change the sign so that both of the 3x could cancel out.

New system of equation

3x + 2y = 0

-3x+15y=-51

17y=-51

y = -3

so we know the y value so now you could find the x value take one equation

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x = 2

you could try it with both of the equations

3x + 2y = 0

3x + - 6=0

3x-6=0

3x=6

x=6/3

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6 0
3 years ago
Niko wants to buy a bicycle that costs $145. He has already saved $25. He says that he can determine the amount he still needs t
nevsk [136]
145 - 25 = b
b = 120
4 0
2 years ago
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