1. No, it is not a valid inference because her classmates do not make up a random sample of the students in the school
2. 80 students
3. 696 students
4. Yes, this is a valid inference because she took a random sample of the neighborhood
.16x + 19.95 = 40
Max of 125.31... miles can be drove
Answers:
∠A=45° & ∠B=45°
Step-by-step explanation:
In triangle ABC, all angles are less than 180° but their sum is 180°
For the trigonometric statements
sin(A)=cos(B)
sin(B)=cos(A)
These are true when these angles that are A and B are equal and on these angles the sin and cos value must be same.
Hence, both angles are of 45°
Answer:
Vertical compression
Step-by-step explanation:
g(x)=0.25f(x), if you substitute for f(x) you get B
Answer:
14.3 km (1 d.p.)
Step-by-step explanation:
To find the <u>mean</u>, divide the sum of all data values by the total number of data values.
If Mark ran a mean distance of 13.2 km in five days, we can use the mean distance for each of the 5 days in our calculation.
