18 - 5y = y + 4
Step 1: Simplify both sides of the equation.
18 - 5y = y + 4
Simplify: (show steps)
-5y + 18 = y + 4
Step 2: Subtract y from both sides
-5y + 18 - y = y + 4 - y
6y + 18 = 4
Step 3: subtract 18 from both sides
-6y + 18 - 18 = 4 - 18
-6y = -14
Step 4: divide both sides by -6
-6y/-6 = -14/-6
y=7/3
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Answer:
Solve the following inequality for b:
4 (36 + 2) 2 = 647
Check whether b is present in the given inequality:
Answer: The variable b is not present. Therefore its value cannot be determined
Step-by-step explanation:
B, c and d would be the answer
Your statement that angle C and angle D adding to 180 degrees isn't always true. What is always true is that angle A and angle C add to 180 degrees.
Rule: The opposite angles of an inscribed quadrilateral are supplementary (add to 180 degrees)
So,
(angle A) + (angle C) = 180
(x+2) + (x-2) = 180
x+2+x-2 = 180
2x = 180
2x/2 = 180/2
x = 90
Once you know x, you can find the angles
measure of angle A = x+2
measure of angle A = 90+2
measure of angle A = 92 degrees
measure of angle C = x-2
measure of angle C = 90-2
measure of angle C = 88 degrees
Note how A+C = 92+88 = 180
measure of angle D = x-10
measure of angle D = 90-10
measure of angle D = 80 degrees
measure of angle B = 360-A-C-D ... see note below
measure of angle B = 360-92-88-80
measure of angle B = 100 degrees
Note: for any quadrilateral, the four angles add to 360 degrees. So A+B+C+D = 360. We can solve for B to get B = 360-A-C-D
