Answer:
And we can find this probability with the normal standard distribution and we got:
Step-by-step explanation:
Let X the random variable that represent the variable of a population, and for this case we know the distribution for X is given by:
Where 
and 
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
Using this formula we got:
And we can find this probability with the normal standard distribution and we got:
Take 12500-11625, which is 875.
Divide 875 by the original price, 12500, to get 0.07.
Multiply 0.07 by 100.
Your answer should be a 7% reduction.
Took the quiz myself, 15/17 is the answer.
Answer: 10
Step-by-step explanation Simplifying
2x + 7 = 3(x + -1)
Reorder the terms:
7 + 2x = 3(x + -1)
Reorder the terms:
7 + 2x = 3(-1 + x)
7 + 2x = (-1 * 3 + x * 3)
7 + 2x = (-3 + 3x)
Solving
7 + 2x = -3 + 3x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-3x' to each side of the equation.
7 + 2x + -3x = -3 + 3x + -3x
Combine like terms: 2x + -3x = -1x
7 + -1x = -3 + 3x + -3x
Combine like terms: 3x + -3x = 0
7 + -1x = -3 + 0
7 + -1x = -3
Add '-7' to each side of the equation.
7 + -7 + -1x = -3 + -7
Combine like terms: 7 + -7 = 0
0 + -1x = -3 + -7
-1x = -3 + -7
Combine like terms: -3 + -7 = -10
-1x = -10
Divide each side by '-1'.
x = 10
Simplifying
x = 10
Answer:
17.70-2.90=14.80
14.80/1.85=8
He could buy a maximum of 8 chip bags.
bags of chips = x
17.70-2.90/1.85≥x
