The probability is 0.1429.
The probability that the first person chosen is a boy is 5/7. The probability that the second is a boy is 4/6; the third, 3/5; and the fourth, 2/4. Both the numerator and denominator decrease every time, because you lose a boy to choose from and you lose a student to choose from as well. This gives us:
5/7(4/6)(3/5)(2/4) = 120/840 = 0.1429.
Answer:
Step-by-step explanation:
Multiply the numbers 2 ( x - 11 ) * 2 = 128
4 ( x - 11 ) = 128
Distribute 4 ( x - 11 ) = 128
4x - 44 = 128
Add 44 to both sides 4x - 44 = 128
4x - 44 + 44 = 128 + 44
Simplify - Add the numbers
4x - 44 + 44 = 128 + 44
4x = 128 + 44
- Add the numbers
4x = 128 + 44
4x = 172
Divide both sides by the same factor 4x = 172
4x/4 = 172/4
Simplify
- Cancel terms that are in both the numerator and denominator
4x/4 = 172/4
x = 172/4
-Divide the numbers
x = 172/4
x = 43
Answer:
Y = 1/2
Step-by-step explanation:
6/36 = y/3
Y = 1/2
Just multiply 3 by both sides
Answer:
πr2
25π ft²
Step-by-step explanation: