Answer:
False
Step-by-step explanation:
Just because two angles are both obtuse does not necessarily mean that the two angles are equal.
Obtuse just means that the angles are above 90 degrees.
One angle could be 91 degrees while the other could be 150, and those angles are not equal.
Let number of driveways , she shoveled on Sunday = x
And for 4 driveways , Kendra charges = 4*11=44
Therefore,
143 = 44 + 11x
And that's the model for the given situation .
Subtracting 44 from both sides,
143-44 = 11x
99 = 11x
Dividing both sides by 11
x = 9
Therefore she shoveled 9 driveways on Sunday .
Answer: 
Step-by-step explanation:
Given : The speeds of vehicles traveling on a highway are normally distributed .
Standard deviation: 
Since , sample size : 
, which is small sample (n<30) so the test applied here is a t-test.
Degree of freedom= 
Sample mean : 
Level of significance : 
Then , significance level : 
Using t-distribution table , Critical value : 
The confidence interval for population mean is given by :-
Hence, a 98% confidence interval for the population mean=
Step-by-step explanation:
We are given that x < 13 so: x equals every number <u>below</u> 13. For the table:
x
9 YES because 9 < 13
11 YES because 11 < 13
15 NO because 15 is NOT less than 13
19 NO because 19 is NOT less than 13
Answer:
y=(0.1)x and y=2(1/4)x represent exponential decay
the rest all are an equation used for exponential growth
