Answer:
The probability of 1 or less children from that group to learn how to swim before 6 years of age is 0.072
Step-by-step explanation:
In this case we need to compute the probability of none of these 12 children learns to swim before 6 years of age. This is given by:
p(0) = (1 - 0.312)^(12) = 0.688^(12) = 0.01124
We now need to calculate the probability that one child learns to swim before 6 years of age.
p(1) = 12*0.312*(1 - 0.312)^(11) = 3.744*(0.688)^(11)
p(1) = 3.744*0.01634
p(1) = 0.0612
The probability of 1 or less children from that group to learn how to swim before 6 years of age is:
p = p(0) + p(1) = 0.01124 + 0.0612 = 0.07244
1y + 2x = 0 ⇒ -2x - 1y = 0
4x + 1y = 3 ⇒ <u>4x + 1y = 3</u>
<u>2x</u> = <u>3</u>
2 2
x = 1.5
4(1.5) + y = 3
6 + y = 3
<u>- 6 - 6</u>
y = -3
(x, y) = (1.5, -3)
Answer:
200 or 30
Step-by-step explanation:
what is the mass of each book in grams?
We start out with 1/2 pitcher.
They shared 3/4 of that amount that was in the pitcher.
3/4 x 1/2 = 3/8
In total, they shared 3/8 of a pitcher of iced tea.
It says they shared it equally, meaning each of them got half of the 3/8.
1/2 x 3/8 = 3/16
That gives us the answer to:
a) They each drank 3/16 of a pitcher of iced tea.
So, they shared 3/8 of the pitcher. Meaning they drank 3/8 of it. Meaning 5/8 of it is still left in the pitcher. That gives us the answer to:
b) 5/8 of a pitcher of iced tea was left over.