Answer:
34
Step-by-step explanation:
She has 7 soccer trophies.
So lets assume she wants to display it in a straight line:
The 1st has 7 ways
The 2nd has 6 ways
The 3rd has 5 ways
The 4th has 4 ways
until the last.
Total = 7 × 6 ×5 × 4 × 3 × 2 × 1 = 5040 ways.
There is a formula for this
Time = [Worker 1 * Worker 2] / [Worker 1 + Worker 2]
Time = 30*40 / (30+40)
Time = 1,200 / 70
Time =
<span>
<span>
<span>
17.1428571429
</span>
</span>
</span>
minutes
Alternate method
In 1 minute, Mark can clean (1/30) of a room
In 1 minute, Lynn can clean (1/40) of a room
Together, they can clean (1/30 + 1/40) = (7 / 120) of a room in 1 minute.
Together, they can clean one room in (120 / 7) minutes.
(120 / 7) =
<span>
<span>
<span>
17.1428571429
</span>
</span>
</span>
minutes.
Source:
http://www.1728.org/work.htm
Answer:
1. d-even lc- -
2. d- odd lc- +
3. type- odd lc- +
4. type- even lc- -
5. d- even lc- - type even
6 d- odd lc- + type- even
Step-by-step explanation:
when the degree is odd, one leg goes down one goes up
when the degree is even, both legs go up or down
when the leading coefficient is negative the end behavior is -∞
when the leading coefficient is positive, the end behavior ∞
a function is odd when both legs go down
a function is even when the legs go in different directions
a function is neither when it isn't a function (think vertical line test)
