Y=mx+b
x=number of newspapers
37.5 earned for 5 newspapers
37.5=5m+b
earned 75 and deliverd 20 newpapers
75=20m+b
we have
37.5=5m+b and
75=20m+b
multiply first equaiton by -1 and add to other equaiton
-37.5=-5m-b
<u>75=20m+b +</u>
37.5=15m+0b
37.5=15m
divide both sides by 15
2.5=m
sub back to find b
75=2.5(20)+b
75=50+b
minsu 50 both sides
25=b
y=2.5x+25 is lnear funtion
There are 10 marbles, out of these 10 there are 4.
The probability of her picking a blue marble is 4/10
This can be simplified to 2/5
Answer:
Step-by-step explanation:
The area of a circle is given by :
Where
r is the radius of the circle.
If we talk about the area of half of the circle, it means we have to half the area such that,
Hence, this is the required solution.
Answer:
The link is a virus don't search it
Step-by-step explanation:
Answer:
25 hrs
Step-by-step explanation:
#First, we calculate the average earnings per hour by subtracting the running costs from receipts:
Let x be the number of hours it takes to fully recover the investment costs. We divide the investment cost by net receipts to solve for x;
Hence, it takes 25 hrs to repay the investment cost.