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Answer:
See Explanation
Step-by-step explanation:
Given
The question has missing details; as what's required is not stated.
However, since it is a linear equation, possible questions could be
1. Determine the slope
2. Determine the D-intercept
3. Calculate the amount in dollars for (say) 5 miles
An equation is represented as:
Where
By comparing: to
and
This means that the slope is 0.3 and the d intercept is 25
To get the amount for 5 miles, we substitute 5 for x in
<em>The cost of 5 miles is $26</em>
Make use of the above explanation to solve the question
Answer:
a) The new student's score is 90.
b) Their scores are a pair of scores lower than 100 with a mean of 90.5.
Step-by-step explanation:
The mean is the sum of all scores divided by the number of students.
The mean score of 15 students was 82.0
This means that there are 15 students and the sum of the scores is 15*82 = 1230.
(a) Another student joins, and the mean becomes 82.5. What is the new student's score?
Now there are 16 students, the sum of the scores is 1230 + x and the mean is 82.5. So
The new student's score is 90.
(b) Suppose instead that two students join, taking the average from 82 to 83. What could their scores be, if they are restricted to be integer (i.e. whole) numbers?
Now there are 2 new students, so 17 in total. The mean score of the new students is 2x. The total score of the class is 1230 + 2x and the mean is 83. So
The mean of the two students scores is 90.5.
So their scores are a pair of scores lower than 100 with a mean of 90.5.
Answer:
3/4 of the area of the circle is of squared units.
Step-by-step explanation:
Equation of a circle:
The equation of a circle has the following format:
In which the center is and r is the radius.
Area of a circle:
The area of a circle of radius r is given by:
Circle (x+2)² + (y-5)² = 64
Comparing with the standard equation, we have that:
Area of the circle:
What is 3/4 of its area?
3/4 of the area of the circle is of squared units.