' 125% ' means ' 1.25 '
'of' means 'times'
1.25 times (last year) = $10.50
Divide each side
by 1.25: Last year = ($10.50) / 1.25
= $8.40 .
Answer:
60,60,60
Step-by-step explanation:
Answer:
The value of a is 3
Step-by-step explanation:
First you have to make an equation based on the point and slope that you were given. The formula for this is y-(y cordinate of point)=slope(x-x cordinate of slope)
y--2=-3(x-6), which simplifies to y+2=-3(x-6)
In (a,7), 7 is the y coordinate. We have to plug 7 in for the y in our equation.
7+2=-3(x-6),
Combine like terms on the left side to get to 9=-3(x-6)
Multiply out on the left to get 9=-3x+18
Subtract 18 from the left side to get -9=-3x
Divide both sides by negative 3 to get 3=x (remember x is a)
Answer:
<em>f(x) = </em>
<em> x - 2 </em>
Step-by-step explanation:
Slope of the line: m = 
y - 
= m( x - 
)
f(x) = mx + b (b - is y-intercept)
(0, - 2) Coordinates of y-intercept
(4, - 3)
m = 
=
<em>f(x) = </em><em> x - 2</em>
Answer: 
Step-by-step explanation:
The confidence interval for population mean is given by :-
Given : Sample size : 
, which is a large sample , so we apply z-test .
Sample mean : 
Standard deviation : 
Significance level : 
Critical value : 
Now, a confidence interval at the 95% level of confidence will be :-
