Answer:
$20.58
Step-by-step explanation:
28 x 0.30 = 8.4
28 - 8.4 = 19.6
19.6 x 0.05 = 0.98
19.6 + 0.98 = 20.58
There are an infinite amount of equations that pass through a single point. You must provide the slope or y-intercept to get a single equation.
Hope that clarifies.
The random variable X is normally distributed with mean μ=30 and standard deviation σ =10.
Use the transformation 
for calculating the probability. This value is called Z-score.
The Z score is 
.
Refer to the standard normal distribution table.
The probability
Answer:
(13/8, -5/4)
Step-by-step explanation:
substitute the value of y
{y=6x-11
2x-3y=7
solve the equation
2x-3(6x-11)=7
Substitute the value of x
x=13/8
Solve the equation
y=6x13/8-11
A possible solution is
y=-5/4
Check the solution
(x,y)=(13/8, -5/4)
Simplify
{-5/4=6x13/8-11
2x13/8-3x(-5/4)=7
The ordered pair is a solution
{-5/4=-5/4
7=7
<em>Solution </em>
(13/8, -5/4)
