Answer: Sixty (60) Miles per hour.
This is a fraction equal to
750 miles ÷ 12.5 hours
We want a unit rate where
1 is in the denominator,
so we divide top and bottom by 12.5
750 miles ÷ 12.5
12.5 hours ÷ 12.5
=
60 miles
1 hour
=
60 miles
hour
= 60 miles per hour
Another fraction that is equivalent to 2/5 is 4/10
Is there any answer choices?
Answer:A≈46.38
Step-by-step explanation:
A=a2+2aa2
4+h2
AB=a2
Solving forA
A=AB(4h2+AB)+AB=6.4·(4·7.82+6.4)+6.4≈46.3808
Answer:
<h3>Part A</h3>
<u>A particular man on the seat, then 2 men are out of 4:</u>
- 4C2 = 4!/(4-2)!2! = 4*3*2/2*2 = 6
<u>4 women out of 7:</u>
- 7C4 = 7!/(7-4)!4! = 7*6*5*4!/3!4! = 35
<u>Total combinations:</u>
<h3>Part B</h3>
<em>Option 1</em>. 2 men excluded
3 men out of 3 and 4 women out of 7
<u>Total ways:</u>
<em>Option 2</em>. 2 women are excluded
<u>3 men out of 5 and 4 women out of 5</u>
- 5C3*5C4 =
- 5!/3!(5-3)! * 5!/4!(5-4)! =
- 5*4/2 * 5/1 = 10
<em>Option 3</em>. 1 man and 1 woman excluded
<u>3 out of 4 men and 5 out of 6 women:</u>
- 4C3*6C5 =
- 4!/3!(4-3)! * 6!/5!(6-5)! =
- 4*6 = 24
<h3>Part C</h3>
<u>No restrictions, so the number of ways:</u>
- 3C5 * 7C4 =
- 5!/3!(5-3)! * 35 =
- 4*5/2 * 35 =
- 10*35 = 350