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Katarina [22]
2 years ago
15

Look at the picture below that is the question

Mathematics
2 answers:
love history [14]2 years ago
8 0

Answer:

12

Step-by-step explanation:

mrs_skeptik [129]2 years ago
6 0

Answer:

6

Step-by-step explanation:

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3 years ago
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I need an answer soon, please! Whoever answers first will get Brainliest!!! Please no troll answers!
Colt1911 [192]

Answer:

x = 8, and y = 12

Step-by-step explanation:

There are 2 variables, so you need 2 equations to form a system of equations in two variables.

The upper left triangle has all angle measures given: 100, 2x + y, 5x + y. We know that the sum of the measures of the angles of a triangle is 180.

First equation:

100 + 2x + y + 5x + y = 180

Simplify:

7x + 2y = 80     (First equation)

Now we see that the upper and lower sides are parallel, so alternate interior angles are congruent. The angles measuring 2x + y and 5x - y are alternate interior angles and are congruent.

Second equation:

2x + y = 5x - y

Simplify:

3x - 2y = 0    (Second equation)

Now we use the first equation and the second equation as a system of simultaneous equations to solve for x and y.

7x + 2y = 80

3x - 2y = 0

Solve the second equation for 2x.

3x = 2y

Now replace 2y in the first equation with 3x.

7x + 3x = 80

10x = 80

x = 8

Replace x with 8 in the second equation.

3(8) - 2x = 0

24 = 2x

x = 12

Answer: x = 8, and y = 12

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2 years ago
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Find the value of "k", given that one solution of the equation 2x² kx + 12 = 0 is<br> is -3/2
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Answer:

Is there a picture to it.

that will me helpful for me

Step-by-step explanation:

Willing to help

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Step-by-step explanation:

   

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