Answer:
1/5
Step-by-step explanation:
There are 30 contestants. 16 are men, which means 14 are women.
All 14 women wear glasses. Since 20 of the contestants wear glasses, that means there are 6 men who wear glasses.
So the probability that a randomly selected contestant will be a male with glasses is 6/30 or 1/5.
Since you can directly sum two fractions with the same denominator, we can rearrange the sum as follows:
![-\dfrac{7}{16} - \dfrac{5}{16} - \dfrac{1}{4}](https://tex.z-dn.net/?f=%20-%5Cdfrac%7B7%7D%7B16%7D%20-%20%5Cdfrac%7B5%7D%7B16%7D%20-%20%5Cdfrac%7B1%7D%7B4%7D%20)
Now we can sum the first two fraction easily:
![\dfrac{-7-5}{16} - \dfrac{1}{4} = \dfrac{-12}{16} - \dfrac{1}{4}](https://tex.z-dn.net/?f=%20%5Cdfrac%7B-7-5%7D%7B16%7D%20-%20%5Cdfrac%7B1%7D%7B4%7D%20%3D%20%5Cdfrac%7B-12%7D%7B16%7D%20-%20%5Cdfrac%7B1%7D%7B4%7D)
We can simplify the first fraction: 12/16=3/4. So, we can sum the two fractions again because they have the same denominator:
![\dfrac{-12}{16} - \dfrac{1}{4} = \dfrac{-3}{4} - \dfrac{1}{4} = \dfrac{-3-1}{4} = \dfrac{-4}{4} = -1](https://tex.z-dn.net/?f=%20%5Cdfrac%7B-12%7D%7B16%7D%20-%20%5Cdfrac%7B1%7D%7B4%7D%20%3D%20%5Cdfrac%7B-3%7D%7B4%7D%20-%20%5Cdfrac%7B1%7D%7B4%7D%20%3D%20%5Cdfrac%7B-3-1%7D%7B4%7D%20%3D%20%5Cdfrac%7B-4%7D%7B4%7D%20%3D%20-1)
Answer:
20
Step-by-step explanation:
if its one fifth than we can just multiply by 5
4 x 5 = 20
hope this helps : )
Answer:
x^a-b
Step-by-step explanation:
x^a/x^b=
x^a-b this only works if a and b have the same base
A composite number because other digits go it besides itself and one