Answer:ion even know cus i just want the points
Step-by-step explanation:
Answer:
-a will be greater than -b because for example, when a=2 and b=5, -a=-2 and -b=-5
19.8 I think and I'm pretty sure I have it right
Answer:
2 hours 30 minutes
Step-by-step explanation:
Step one
Given data
The total distance to be covered= 20miles
Priya runs at a constant speed of 6 miles an hour
Hence Her speed = 6mph
Jada walks at a constant speed of 2 miles an hour
Hence Her speed = 2mph
let the time taken by them to cover the distance be t
Step two:
from speeed= distance/time
distance= speed*time
so
20=6*t+2*t
20= 6t+2t
20=8t
divide both sides by 8
t= 20/8
t=2.5 hours
That is, it wiil take them 2 hours 30 minutes to meet
The reason is because, the distances covered by them must sum up to 20 miles
Let us make an equation to solve :
Y=mx+b (general form of a linear equation)
y=10x-20 (x is the number of haircuts,y is the amount she earns)
the minimum amount to carry out all the expenses is $20
so,
20=10x-20
20+20=10x
40=10x
40/10=x
4=x
so she must do 4 haircuts in an hour
