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Reika [66]
3 years ago
6

If 2xº and (2x - 20) are a pair of adjacent supplementary angles, find thevalue of x.​

Mathematics
1 answer:
kifflom [539]3 years ago
8 0

Answer:

x = 50

Step-by-step explanation:

Since the two angles are supplementary, add them together and set them equal to 180 degrees

2x + 2x - 20 = 180          Combine like terms

4x - 20 = 180

   + 20   + 20                 Add 20 to both sides

4x = 200                        Divide both sides by 4

x = 50

If this answer is correct, please make me Brainliest!

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I need help with the numbers 9 and 10 please help
Katen [24]
9] Rocky Falls would be 13.4°F at sunrise.

Use the equation 23.1 + (-9.7) = x, where x is the temperature at sunrise (13.4)
23.1 + (-9.7) = 23.1 - 9.7
Solve so that x = 13.4

10] Jamie originally had $263.25 in her account.

Just add how much she spent (135.75 + 32) to how much she ended up with (95.5)

135.75 + 95.5 + 32 = 263.25


If you are asking how much she has if she started out with $95.50 before going to the Mets game,

95.5 - (135.75 + 32) = -$72.25
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3 0
4 years ago
Two digit subtraction with regrouping
algol13

Answer:

WHAT IS D QUESTION?????

Step-by-step explanation:

6 0
3 years ago
8. 36.8 = [11.5 – (2.5 X 3)]2
Anestetic [448]

Answer:

[11.5-(2.5*3)]^2=16

Step-by-step explanation:

We want to evaluate [11.5-(2.5*3)]^2

Let us evaluate within the parenthesis first:

[11.5-(2.5*3)]^2=[11.5-(7.5)]^2

\implies [11.5-(2.5*3)]^2=[11.5-7.5]^2

We again subtract within the bracket to obtain:

[11.5-(2.5*3)]^2=[4]^2

This finally gives us:

[11.5-(2.5*3)]^2=16

6 0
3 years ago
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omeli [17]
Ram is seven years old
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What is the solution to the system of equations y= -3x+6 and y =9
Lilit [14]
Plug the value of 9 in for y
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Divide both sides by -3
-1=x

Final answer: x=–1
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3 years ago
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