Graph B fails the Vertical Line Test and thus does not represent a function. Please review "Vertical Line Test."
24.95 times 3 is $74.85
Your answer is $74.85
<em>Hope this helps!</em>
Answer: B
Step-by-step explanation: u have to simplify the 36 and the 12
Answer:
The 95% confidence interval based on this sample is =
[6.41, 7.79]
Step-by-step explanation:
The formula for Confidence Interval =
Mean ± z × standard deviation/√n
Sample mean = 7.1 hours
Standard deviation = 5 hours
n = 200 students
z = 95% confidence interval z score
= 1.96
C.I = 7.1 ± 1.96 × 5/√200
C.I = 7.1 ± 0.693
Hence, Confidence Interval
= 7.1 - 0.693
= 6.407
Approximately = 6.41
= 7.1 + 0.693
= 7.793
Approximately = 7.79
Therefore, the 95% confidence interval based on this sample is
[6.41, 7.79]
X^2+4x-4=8
x^2+4x-4-8=0
x^2+4x-12=0
x^2+6x-2x-12=0
x(x+6)-2(x+6)=0
x+6=0 x-2=0
x=-6 x=2
hope this helps!