Answer:
x=10
Step-by-step explanation:
Make 2x the only variable on the left side of the equation. Do that by taking 3 and 5 to the left. Note: if you move/transpose any number the sign must change.
2x = 18+5-3
2x=20
Divide both sides of the equation by 2 to make x the only variable left.
x=10
1200= 80%
? =100%
to find the ? you can multiply 100(1200)=120000
then 120000 divided by 80= 1500
the original price was 1500, with the discount of 20% you save 300$ and the price is 1200$
Answer:
2,601
Step-by-step explanation:
You have to find the hypotenuse using the formula 
to find the length of the square which would be c. 
giving you an answer of 51. To find the area of the square you need to multiply 51 to itself so, 
.
Answer:
The set of all numbers less than 2.
Step-by-step explanation:
{x | x < 2}
-Means all values of x that are less than 2.
- this is the set of all numbers less than 2
Answer:
10 + 5xy = -80
Step-by-step explanation:
10 + 5xy = ?
x = 9 and y = -2
10 + 5xy = 10 + 5(9)(-2)
= 10 - 90
= -80
