Answer:
13y-10
Step-by-step explanation:
Expand: -5(-y+2): 5y-10
Add similiar elements: 8y+5y=13y
=13y-10
Answer:
7 hours
Step-by-step explanation:
If you divide
171 ÷ 9
you find the $ Tammy made in 1 hour.
171 ÷ 9 = 19
So Tammy made 19 for 1 hour of work.
Then we divide 133 by 19 to find out for how many hours she has to work.
133 ÷ 19.67 = 7. So Tammy has to work 7 hours to make $133.
It could be 2 things
y=log(x)+6 or
y=log(x+6)
if it the first one
y=logx to y=(logx)+6
moved up 6 units
if 2nd one
y=logx to y=log(x+6), that is move the graph 6 units to left
Answer:
1. Rate
2. unit
3. not sure what this one is sadly
4. ratio
5. dividing
6. equavilent
The rate of Sue is 1 car per hour: 1 (c/h)
then the rate of Steve is 2 (c/h) , because Steve works faster, he can wash twice the number of cars, for the same amount of time.
Thus If Steve and Sue work together, they can wash 1 + 2 = 3
(cars per hour).
That is, the rate of Steve and Sue working together, is 3 (c/h).
In the first 30 minutes, Sue washes half of the car.
The remaining half will be washed at a rate of 3 (c/h)
The main formula is Work = Time * Rate
where Work is washing (1/2)c, and rate is 3(c/h)
Time=Work/Rate =
1/ 6 h =(1/6)*60 min = 10 min
Answer: 10 min