Answer:
x = 20
Step-by-step explanation:
I don't see a y in the diagram.
The 3 angles x, 90 and (4x - 10) lie on the line EF and sum to 180°, so
x + 90 + 4x - 10 = 180, that is
5x + 80 = 180 ( subtract 80 from both sides )
5x = 100 ( divide both sides by 5 )
x = 20
Answer:

Step-by-step explanation:
<u>Step 1: Combine like terms
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Answer: 
The solution is: b < 13.8
Step-by-step explanation:
Let b be the number then according to given statement

Subtracting 9.8 from both sides

We have to remove the minus sign in order to get the final solution.
Multiplying by -1

Hence,
The solution is: b < 13.8
Keywords: Inequality, variables
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