Answer:
9
Step-by-step explanation:
3/1*3/1=
3*3= 9
Answer: 9
9 is the most simplified version.
(I think this is what it means)
Answer:
Age= 15
Step-by-step explanation:
Let a be for age at the moment
(a-3)^2 =6(a+9)
a^2-6a+9=6a+54
a^2-12a-45
(a-15)(a+3)
a=15 or a=-3
Age cannot be negative (-)
Therefore
Age =15
Answer:
A
Step-by-step explanation:
Here as we can see that minimum drink a person can drink is 0 and is
(3.5-0)/2 =1.75 std deviation away from mean
which reflects that distribution;s right tail is more extended
therefore option A is correct: Distribution is right skewed
Answer:
Percentage of Taxes = 10.689 %
Step-by-step explanation:
Given that
Total earning of Anna is $442.50
The amount which is held with Taxes = $47.30
Now in terms of percentage
percentage of taxes from her total earning = 
So % taxes = ( 0.106892) × 100
∴ Taxes percentage = 10.689 %
Answer:
option a)
0.286
Step-by-step explanation:
Given that,
number of red pens in cup = 5
number of black pens in cup = 10
number of pen randomly selected = 3
There are 5 red pens and 10 black pens. So there are 5 + 10 = 15 pens in all.
probability of having all red pens = (5/15 x 4/14 x 3/13)
= 2/91
probability of having all black pens = (10/15 x 9/14 x 8/13)
= 24/91
probability that all pen are of same colour = 24/91 + 2/91
= 2/7
≈ 0.286
