b. no a vertical line passed through the two points
$680 Dollars would be the price if you had to deduct 20%
Part a:
x + y = 55
y = x + 25
part b:
jackie runs 15 minutes every day.
part c:
it is not possible for jackie to spend 45 minutes a day dancing, since the time she spends dancing and running is 55 minutes, and we know that it takes 15 minutes to run
step-by-step explanation:
let's call and while jackie is dancing
let's call x while jackie is running
then we know that jackie runs and dances for a total of 55 minutes every day
this means that:
x + y = 55
we also know that jackie dances 25 minutes more than she runs.
this meant that:
y = x + 25
now we substitute the second equation in the first and solve for the variable x
x + x + 25 = 552x = 55-252x = 30x = 15
jackie runs 15 minutes every day.
now we find the value of the variable -y
15 + y = 55y = 55-15y = 40
note that it is not possible for jackie to spend 45 minutes a day dancing, since the time she spends dancing and running is 55 minutes, and we know that it takes 15 minutes to run
I am guessing that you are looking for the value of "x"!
Here we go :
18x - 2(3x + 1) = 5x - 16
Let's start with the parentheses :
-2 × 3x = -6x
-2 × 1 = -2
18x - 6x - 2 = 5x - 16
subtract 6x from 18x
12x - 2 = 5x - 16
add 2 on both side of the equation
12x = 5x - 14
subtract 5x from both side of the equation
7x = -14
divide by 7 on each side of the equation
x = -2
There you go! I really hope this helped, if there's anything just let me know! :)