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umka21 [38]
3 years ago
12

How do you find the value of x

Mathematics
2 answers:
inysia [295]3 years ago
5 0
45+45+x =180
(Because all triangles have a sum of 180)
90+x=180
Subtract 90 from both sides
X=90

CHECK
45+45+90= 180
zlopas [31]3 years ago
3 0

Answer:

To find the value of x, bring the variable to the left side and bring all the remaining values to the right side. Simplify the values to find the result.

Step-by-step explanation:

isnt the x a 90 degree angle?

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Step-by-step explanation:

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3 years ago
A first number plus twice a second number is 14. twice the first number plus the second totals 31. find the numbers.
topjm [15]
------------------------------------------------------------
Define the two numbers
-----------------------------------------------------------
Let the first number be x.
Let the second number be y.

------------------------------------------------------------
Form equations and solve x and y
------------------------------------------------------------
x + 2y = 14 ------------------ (1)
2x + y = 31 ------------------ (2)

------------------------------------------------------------
Equation (1) x 2
------------------------------------------------------------
2x + 4y = 28  ---------------(1a)

------------------------------------------------------------
Equation (1a) - 2
------------------------------------------------------------
3y = 28 - 31
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------------------------------------------------------------
Substitute y = -1 into (1)
------------------------------------------------------------
x + 2(-1) = 14
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------------------------------------------------------------
Answer: x =16, y = -1
------------------------------------------------------------

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Step-by-step explanation:

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Read 2 more answers
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