Answer:
6.7
Step-by-step explanation: round 6 i think
Answer:
Efficiency (Work done per day) for :
( ˘ ³˘)/
A & B together = 1/35th
A alone = 1/60th
Thus, efficiency of B alone = Total - A’s efficiency
Step-by-step explanation:
OR Efficiency of B alone = (1/35) - (1/60) = 6/210 - 3.5/210 = 2.5/210 = 1/84th
Hence, since B completes 1/84th work daily, he would take 84 days to complete the work alone.
Answer:
Number = -1
Step-by-step explanation:
8 - x = 3(x + 4)
8 - x = 3x + 12 ( /+x / -12 on both sides)
8 - 12 - x + x = 3x + x + 12 - 12
-4 = 4x (/ divide by 4)
-4/4 = 4x/4
-1 = x
First graph your x and y intercept then pick any two points on the line.

that's the equation used to find your slope
Example:
(4,2) (8,6) let's say those are the points you pick from the line
so then you subtract 6-2=4 (6 is your y2 and 2 is your y1)
then subtracts 8-4=4 (8is your x2 and 4 is your x1)
then your left with

if you can reduce the reduce in this case you can which leaves you with

and that's how you find the slope