Answer:
-12
Step-by-step explanation:
x/4 +24 =21 /×4
x +96 =84
x=84 - 96
x=-12
Answer:
no, it is not a solution to the given inequality
Step-by-step explanation:
It would be 100,300
Hope this helped
Answer:
y = 2/5x - 3
Step-by-step explanation:
I guess the question should be: find the equation of a line that passes through a point
(-5 , -5) with a slope of 2/5.
Step 1: find the slope
We are given slope to be 2/5
m = 2/5
Step 2: substitute m into the equation of a line
y = mx + c
y = 2/5x+ c
Step 3: substitute the point into the equation
( -5 , -5)
x = -5
y = -5
y = 2/5x+ c
-5 = 2/5(-5) + c
-5 = 2 * -5/5 + c
-5 = -10/5 + c
-5 = -2 + c
-5 + 2 = c
-3 = c
c = -3
Substitute c = -3
y = 2/5x + c
y = 2/5x - 3
Answer:
Step-by-step explanation:
confidence interval formula is epressed as;
CI = xbar ± z(s/√n)
xbar is the mean = $115
z is the z score at 90% CI = 1.645
s is the standard deviation = 18.10
n is the sample size = 35
Substitute;
CI = 115 ± 1.645(18.10/√35)
CI = 115 ± 1.645(3.0594)
CI = 115± 5.0328
CI = (115-5.0328, 115+5.0328)
CI = (109.97, 120.03)
Hence a 90% confidence interval for the mean electricity bill of all UCF students is 109.97<x<120.03
