Answer:
Step-by-step explanation:
Grace paid $4.80/(4 notebooks) = {$4.80/4)/notebook = $1.20 per notebook
Jim paid $3.90/(3 notebooks) = ($3.90/3)/notebook = $1.30 per notebook
Grace found the better buy.
Answer:
|x^2-26x|+144
Step-by-step explanation:
x^2= x squared
The intersection of two lines is called a point.
Answer:
60 miles per hour.
Step-by-step explanation:
Let r represent speed of wind blowing in miles per hour.
We have been given that the cruising speed of the plane was a constant 360 mph in air. The speed of the plane is the direction of wind would be 
.
The speed of the plane is the opposite direction of wind would be 
.
Distance covered in the direction of wind would be 
.
Distance covered in the opposite direction of wind would be 
.
Since both distances are same, so we will get:
Therefore, the wind is blowing at a rate of 60 miles per hour.
Answer:
A. E cannot affect F and vice versa because the people were randomly selected, so the events are independent.
Step-by-step explanation:
Imagine a situation.
We probably live very far from each other
There is a probability that I kill a spider.
There is a probability that you accidentaly swallows a spider.
Or vice-versa.
If I kill a spider, i won't impact the probability that you accidentaly swallows a spider. So these events are independent, and the correct answer is:
A. E cannot affect F and vice versa because the people were randomly selected, so the events are independent.
