(4x + 20) + (x - 10) = 180
4x + 20 + x - 10 = 180
5x + 20 - 10 = 180
5x + 10 = 180
5x = 170
x = 34
Answer:
62.5
Step-by-step explanation:
Let unknown number be represented as X
80/100 ×X=50
80X/100=50 cross multiply
80X=5000 divide both side by 80
X=62.5
The number is 62.5
Its you will be found and the equation answer is 56
Answer:
4
Step-by-step explanation:
2 plus 2 is 4
Answer:
y = 2x
Step-by-step explanation:
Kristen writes 2 pages of notes per hour in class. This is the rate of change. The function can be written as a linear equation y = mx where m = 2 pages per hour.
The function is y = 2x where x is hours in class and y is the number of pages.