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Brut [27]
3 years ago
11

Plss help me do this o-o

Mathematics
2 answers:
Vinvika [58]3 years ago
4 0

Answer:

x=\sqrt6\\y=\sqrt{12}

Step-by-step explanation:

We know that since angles in a triangle add up to 180º, the remaining angle must be 45º.

So the side with length x must be equal to the side with length \sqrt6. That is:

x=\sqrt6

Now, by Pythagoras:

y=\sqrt{(\sqrt6)^2+(\sqrt6)^2}\\=\sqrt{6+6}\\=\sqrt{12}

S_A_V [24]3 years ago
3 0

Answer:

x=\sqrt{6}

y=2\sqrt{3}

Step-by-step explanation:

Sum of the interior angles of a triangle = 180°

So the missing angle = 180 - 45 - 90 = 45°

Therefore, as two of the interior angles are congruent (both 45°), this is an isosceles triangle.  This means that the two shorter sides are equal,

so x=\sqrt{6}

Use Pythagoras' Theorem to calculate y:

y=\sqrt{(\sqrt{6})^2+(\sqrt{6})^2 } =\sqrt{12} =2\sqrt{3}

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Arada [10]
Jake spent a total of 70 cents.
b = black-and-white = 8 cents
c = color = 15 cents

70 = 8b + 15c

he made a total of 7 copies
b + c = 7

system of equation:
70 = 8b + 15c
b + c = 7

--------------------------

b + c = 7
b + c (-c) = 7 (-c)
b = 7 - c

plug in 7 - c for b

70 = 8(7 - c) + 15c
Distribute the 8 to both 7 and - c (distributive property)

70 = 56 - 8c + 15c
Simplify like terms

70 = 56 - 8c + 15c
70 = 56 + 7c

Isolate the c, do the opposite of PEMDAS: Subtract 56 from both sides

70 (-56) = 56 (-56) + 7c
14 = 7c

divide 7 from both sides to isolate the c

14 = 7c
14/7 = 7c/7
 c = 14/7
 c = 2

c = 2
---------------

Now that you know what c equals (c = 2), plug in 2 for c in one of the equations.
b + c = 7
c = 2
<em>b + (2) = 7
</em><em />Find b by isolating it. subtract 2 from both sides
b + 2 = 7
b + 2 (-2) = 7 (-2)
b = 7 - 2
b = 5

Jake made 5 black-and-white copies, and 2 color copies

hope this helps
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4 years ago
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I think the answer is: sometimes



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Use the combination method to solve for y: 5x + 3y = 12 and -5x + 4y = 16
Effectus [21]

Answer:

y = 4

Step-by-step explanation:

We have,

5x + 3y = 12 ....(1)

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-5x + 4y = 16 ....(2)

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3 0
3 years ago
In order to determine the average price of hotel rooms in Atlanta. Using a 0.1 level of significance, we would like to test whet
IgorLugansk [536]

Answer: 0

Step-by-step explanation:

Let \mu be the average room price.

By considering the given problem , we have

H_0:\mu=110

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The test statistic (z) is calculated and it is 1.74.

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Hence, the correct option is 0.

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