Answer:
4004
Step-by-step explanation:
The number of combinations of choosing r objects from a group of n is nCr.
So the number of ways to get 7, 8, 9, or 10 heads from 13 coin tosses is:
₁₃C₇ + ₁₃C₈ + ₁₃C₉ + ₁₃C₁₀
= 1716 + 1287 + 715 + 286
= 4004
I don't know what you are asking for the first part of the question but 36+23+17 = 76
Hope this helped a little! :)
Velocity * time = distance
40 (miles / hour) * t (hours) = 60 (miles)
Take note how the units work. miles/hour * hours = miles. This is an indication that a formula we picked is correct.
Now, looking at our formula (and neglecting units at this point)
40t = 60
t = 60/40
<span>t = 1.5 hours</span>
Answer:
6x +24
Step-by-step explanation:
you factor out the 6 so 6x and 6*4 is 24
Answer: C. 5 and 6
Step-by-step explanation:
You divide 23 divided by 4 and it will give you 5.75 and that’s how you know is between 5 and 6
