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jenyasd209 [6]
3 years ago
5

Find the value of x. Show all work. (9x+9)° 45 5x

Mathematics
1 answer:
Lapatulllka [165]3 years ago
5 0
Angles on a straight line add to 180 degrees. This means that the missing angle in the triangle is 180 - 9x + 9.

Next, angles in a triangle add up to 180 degrees. This means that:
45 + 5x + 180 - 9x + 9 = 180

We can simplify this down:
234 - 4x = 180

Now subtract 234 from both sides:
-4x = -54

Finally divide both sides by -4:
x = 13.5 degrees

Hope this helps!
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you are "hiding" some more information (like how much they made together).

without that we cannot calculate the actual values.

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b = amount Benjamin made

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b = 3×a

c = 2×b = 2× 3×a = 6×a

that's it.

your see ? now we need something that "ties" all 3 together, an equation of all 3 variables, where we can use the first 2 equations (by substitution) and then solve for the remaining third variable.

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