Answer:
D
Step-by-step explanation:
A function is written in slope intercept form (y = mx + b)
so we first have to find the y-intercept or "b" in the question it states that they started off 400 miles away so that would be the "b" then you would need to find the m or slope and in the question it says after seven hours they where 50 miles away and 400 minus 50 is 350 so they traveled 350 miles in 7 hours so you then have to divide 350 by 7 and you get the slope 50 but since it is to find out how far away they are we make it negative giving you the equation y = -50 +400. Hope you found this helpful :D
We will use the equation:
r t = 3/4 r ( t+12 ) /:r
t = 3/4 t + 9
t - 3/4 t = 9
1/4 t = 9
t = 9 * 4 = 36 minutes ( takes a trip to the market )
36 + 12 = 48 minutes
The ride home takes 48 minutes.
Answer:
Its A
Step-by-step explanation:
Answer:
x=-1
Step-by-step explanation:
first you multiply 3 by whats in the parenthesis (you would get 6x-3)
then on the other side you combine like terms (add 7x plus 5x=12x)
Then you would isolate X to one side by subtracting 6x from 12x
Then you would subtract 3 from the side with 12x
By now your equation would be -6=6x
so you would divide both side by negative six to get x=-1
11. 1/81
12. 1/512
13. 1/81
14. 1/125
17. 1/72
18. 189/625
