Answer:
8.
Step-by-step explanation:
To find the range, take your largest number and subtract it to
your smallest number. 15-7 is 8. Therefore, your range is 8.
Answer:
Step-by-step explanation:
If the mean of 15 students is 71.5, then total score = 15 X 71.5 = 1072.5
The median score is 62, meaning that, the combined score of two students = 62 X 2 = 124
The difference of 1072.5 and 124 = 948.5, this represents the total score of 13 other students
∴ The mean score of 13 students = 948.5/13 = 73
In conclusion, it was only very few students that took the exam and majority of other students absconded from the exam. Majority of students scored averagely above 70.
The best way to see what is happening in both situations is to create a table showing the new elevation after each minute.
Please see the attached picture for the work.
After five minutes, both balloons will be at the same height.
Answer:
w=-11/4 or -2 and 3/4
Step-by-step explanation:
To solve this, we first have to cancel out the dividing by-3. We can use the inverse operation of division, which is multiplication. We have to multiply both sides by -3, and the equation becomes 4w+5= -6. Then, we subtract 5 from both sides. We get 4w= -11. We finally divide 4 on both sides, getting w=-11/4. -11/4 is in improper fraction form and -2 and 3/4 is in mixed number form.
Answer: a reflection across the y-axis and scaling it by a factor of 1/2
Step-by-step explanation: First, you need to reflect the shape over the y-axis to move it into the neighboring quadrant. After that, you scale the polygon down by a factor of 1/2, because the lengths of the line segments of A'B'C'D' are half the length of the original polygon, ABCD.