Number of friends - x
50-3x=2
-3x=-48
3x=48
x=16
Jack has 16 friends.
Answer:
0.285
Step-by-step explanation:
28.5/100 = 0.285
Answer:
Cost price of the fan is
.
Step-by-step explanation:
Given: A man sold a fan for
. He incurred a loss of
.
To find: The cost price of the fan
Solution:
We have,
Selling price, S.P., of the fan 
Loss 
We know that 
Now let the C.P. of the fan be 
So, 





Hence, the cost price of the fan is
.
First we find the slope by using the slope formula
slope = (y2 - y1) / (x2 - x1)
(2,4)(4,10)
slope = (10 - 4) / (4 - 2) = 6/2 = 3
now we use slope intercept form
y = mx + b
slope(m) = 3
use either of ur points (2,4)...x = 2 and y = 4
now we sub and find b, the y intercept
4 = 3(2) + b
4 = 6 + b
4 - 6 = b
-2 = b
so ur equation is : y = 3x - 2