Domain is: -∞, ∞
Range is: 16, -∞
Answer: 0.5143
Step-by-step explanation:
Probability of students who are over 21 years old = 30% = 0.3
Probability of students who are under 21 years old = 100% - 30% = 70% = 0.7
Probability of drinking alcohol for over 21 = 80% = 0.8
Probability of not drinking alcohol for over 21 = 100%- 80% = 20% = 0.2
Let the probability of the students who are not over 21, that drink alcohol be p.
Total probability of a college student drinking alcohol = (0.3 × 0.8) + (0.7 × p)
0.6 = (0.3 × 0.8) + (0.7 × p)
0.6 = 0.24 + 0.7p
0.7p = 0.6 - 0.24
0.7p = 0.36
p = 0.36/0.7
p = 0.5143
The probability of the students who are not over 21, that drink alcohol is 0.5143.
Answer:
y = 3
Step-by-step explanation:
I used a graphing calculator (Desmos) to graph the equations. They intersect at (4,3) and the y coordinate is 3. Hope this helps :)
Answer:
72mm^2 (72 mm squared)
Step-by-step explanation:
so i would work out the little triangle which is 8x6/2=<em><u>24m</u></em>m^2
then do 24x8/2 which is <u><em>96m</em></u>m^2
then take away 24 from 96 which gives the answer of <u><em>72mm^2</em></u>
