Answer:
a) All girls - 12C8 /20 C8
b) All boys - 8C8/20C8
c) 4 girls and 4 boys - 8C4 * 12C4/20 C8
d) 3 girls and 5 boys - 8C5 * 12C3/20 C8
e) At least one boy - 1 - 12C8 /20 C8
f) At least two girls 1 - (1 - 8C8 /20 C8)
Step-by-step explanation:
Given -
Total girls - 12
Total boys - 8
a) All girls - 12C8 /20 C8
b) All boys - 8C8/20C8
c) 4 girls and 4 boys - 8C4 * 12C4/20 C8
d) 3 girls and 5 boys - 8C5 * 12C3/20 C8
e) At least one boy - 1 - 12C8 /20 C8
f) At least two girls 1 - (1 - 8C8 /20 C8)
V(t)=t^2+2t+1 integrating we get d(t)
d(t)=t^3/3+t^2+t or more neatly
d(t)=(t^3+3t^2+3t)/3 so
d(2)=(8+12+6)/3
d(2)=26/3
So the particle moves 9 feet (to the nearest foot) in the first two minutes.
Answer:
x=-2
Step-by-step explanation:
1.1x +1.2x -5.4 = -10
Combine like terms
2.3x -5.4 = -10
Add 5.4 to each side
2.3x -5.4+5.4 = -10+5.4
2.3x = -4.6
Divide each side by 2.3
2.3x/2.3 = -4.6/2.3
x= -2
<h3>Answer</h3>
Sale Price = $36.4
Step-by-step explanation:
Sale Price = $36.4 (answer). This means the cost of the item to you is $36.4. You will pay $36.4 for a item with original price of $45.50 when discounted 20%. In this example, if you buy an item at $45.50 with 20% discount, you will pay 45.50 - 9.1 = 36.4 dollars.
Answer:
1
Step-by-step explanation: