Answer:
Step-by-step explanation:
Given
-- number of rolls
Required
The mean of 2's
The distribution follows binomial distribution where:
In this case:
---- the theoretical probability of rolling 2
So, the mean of 2's is calculated using:
Simplify
or
How many ft was each piece ? I need to know to help you
Answer:
$2.73 per gallon.
Step-by-step explanation:
Divide 18 from 49.10 to find the unit rate.
49.10/ 18 = 2.7277... <em>The seven is continued.</em>
2.7277... is the unit rate.
The cost per gallon is $2.73
I would do 600 divided by 32 to get about 19. So I would say about 19 days
Answer:
The solution set is {-2, 3}.
Step-by-step explanation:
We can do this by elimination after manipulating the 2 equations so that the coefficients of y will disappear after addition:
5x - 2y = -16 Multiply this by -5:
-25x + 10y = 80 ...........(A)
4x - 5y = -23 Multiply this by 2:
8x - 10y = -46..............(B)
Now add A and B:
-17x = 34
x = 34/-17
<u>x = -2</u>.
Now substitute x = -2 into the first original equation:
5(-2) - 2y = -16
-2y = -16 +10 = -6
y = -6/-2
<u>y = 3</u>.
Confirm these results by substitution in the second original equation:
4(-2) - 5(3)
= - 8 - 15 = -23.
Checks OK.
