X = 60°
Because the square in the corner tells you that it is 90° (right angle)
So your equation to solve for x would be...
x + 30 = 90
Now you need to isolate the x.
Subtract both sides by 30.
x + 0 = 90 - 30
x = 60
Answer:
the original price was $13
Step-by-step explanation:
hope this helps!
Answer: a and b
Step-by-step explanation:
If you would like to solve the equation x - 6 = - 14, you can calculate this using the following steps:
x - 6 = - 14
x = - 14 + 6
x = - 8
The correct result would be d. - 8.
There is a formula for adding consecutive numbers:
total = n*(n+1)/2
total = 80*(81)/2
total = 3,240