Answer:
Step-by-step explanation:
Givens
d1 = d
d2 = 75 - d
r1 = x
r2 = x + 7
t = 3
Equation
x*t + (x + 7)*t = 75
This equation represents the total distance travelled. Neither one of the cyclists have gone 75 miles, but they both have gone distances that equal a total of 75 miles.
Solution
3x + (x + 7)*3 = 75
3x + 3x + 21 = 75
6x + 21 = 75
6x = 54
6x/6 = 54/6
x = 9
Answer
The first cyclist is going 9 miles / hr
The second cyclist is going 16 miles / hour
There is 1/2 2/4 3/6 4/8 5/10 6/12 7/14 8/16 9/18 10/20 and so on
Answer:
Step-by-step explanation:
Given 
To make A as the subject of the formula we need to rearrange
Divide by 
throughout we get
Brain dump....
have you ever heard the expression cave in ? when u see something (cave in) it looks like crater right?
so just like that you know to draw to crater like objects perpendicular from each other
perpendicular means <span>at an angle of 90° to a given line, plane, or surface.</span>
