If her mileage is half a mile in 6min (0.1h)
her pace would be 5mph
An equation without exponents and two variables, is typically a straight line. All the points on the line with integer coordinates are solutions of the equation. Since x and y have to be positive as well, there aren't that many solutions.
Let's see where the line crosses the x-axis, it is where y=0:
x/0.5 + 0 = 18, so x=9 at the intercept. y=0 there, so this is a point on the line, but not a solution to the question (y was supposed to be positive).
Possible values for x are thus limited to 1,2,3,4,5,6 and 7. You can try them all (ie., solve the equation with them) and see for which x values the y is also positive and integer.
You will find that x=4, y=2 is the only pair that satisfies these conditions.
15% of 80 is 12.
To check this, you can multiply 80 x 0.15, which gives you an answer of 12.
The correct answer is C. Divide both sides by 35
I'll show you
35x=88
35x/35 = 88/35
x=2.5
Answer:
There are 3,900 tickets of $28 each and 1,100 tickets of $40 each sold.
Step-by-step explanation:
x = the number of $28 tickets
y = the number of $40 tickets
x + y = 5000
28x + 40y = 153200
x = 3,900 tickets
y = 1,100 tickets