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Tasya [4]
2 years ago
10

Please help me with this question image attached

Mathematics
1 answer:
Sveta_85 [38]2 years ago
7 0

Answer: 60°


Step-by-step explanation: use exterior angle property,

therefore, y+70°=130°

                        y=130°-70°

                        y=60°


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Write and solve a system of equations. Be sure to label the variables. The sum of two numbers is twelve. Two times the first num
adoni [48]

The solution to the system of equations is x = 8, y = 4.

<h3>How to write the system of equations?</h3>

First, let's define our variables as x and y.

"the sum of two numbers is twelve" is written as:

x + y = 12

"two times the first number minus three times the second number is four" is written as:

2x - 3y = 4

Then the system of equations is:

x + y  = 12

2x - 3y = 4

<h3>How to solve it?</h3>

First, we isolate one of the variables in one equation, I will isolate x on the first one to get:

x = 12 - y

Now we replace this on the other equation, so we get:

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Now we can solve this for y.

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24 - 5y = 4

24 - 4 = 5y

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Now we know the value of y, and:

x = 12 - y = 12 - 4 = 8

Then the solution of the system is:

x = 8, y = 4.

If you want to learn more about systems of equations, you can read:

brainly.com/question/13729904

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2 years ago
Find the slope using the formula, (-11,3) and (-7,5)
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Answer:

y = 1/2x+8.5

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From (-11,3) to (-7,5) you get an average of 4 units to the right and 2 units up, divide that and you get 2 units right and 1 unit up in which the middle is (-9, 4).   Add that until you get to (1, 9), go back one unit to get (0, 8.5), the slope is 1/2x because it is going 1 unit up and 2 units right.

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2 years ago
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