28 students....ratio of boys to girls is 2 to 5...added = 7
2/7(28) = 56/7 = 8 boys
5/7(28) = 140/7 = 20 girls
so right now, there is 8 boys and 20 girls (8/20 = 2/5)
so lets add 2 boys...making it 30 students
10 boys and 20 girls = 10/20 = 1/2 or 1 to 2
answer is : u have to add 2 boys to get a ratio of boys to girls = to 1:2
Answer:
1000
Step-by-step explanation:
5% of my 20000 is 1000 so 21000 total or 1000 anually
Answer:
Step-by-step explanation:
I am sorry but please give detailed question
In a standard normal distribution, the mean is 0 and the standard deviation is 1.
Then, according to the normal table, the probability of gettin z < 0.18 is given by the area on the left of z = 0.18 in the graph related to the distribution. Then we have: P (z < 0.18) = 0.5714
Answer:
17/52
Step-by-step explanation:
red: 13/52
polka dots: 4/52
13 + 4 = 17 = 17/52
(p.s the "Just 1 of the red balloons has polka dots." was kinda to throw u off it doesn't actually matter)