Step-by-step explanation:
Angles in a quadrilateral add to 360 degrees. So, x = 360-88-142-106=24 degrees
Answer:
Given:
......[1]
To prove : x =78
Subtraction property states that you subtract the same number to both sides of an equation.
Subtract 2 from both sides of an equation [1];
Simplify:
......[2]
Multiplication property states that you multiply the same number to both sides of an equation.
Multiply 6 to both sides of an equation [2];

Simplify:
proved!
Statement Reason
1.
Given
2.
Subtraction property of equality
3.
Multiplication property of equality
Domain of 5x^2 + 2x - 1 is all real numbers.
Answer:
Undefined
Step-by-step explanation:
No multiplicative inverse exists for 0
2/1
Step-by-step explanation:
_1/3y=_1
y=_1+3/1
y=2/1