11a = 18a + 21
11a - 18a = - 18a + 21
-7a = 21
7a = -21
a = -21/ 7
a = -3
Answer:
Mean = average. Add up all the numbers, divide it by the number of numbers and there you go.
Median is the middlest number, For example 11, 12, 13, 14, 15. The median would be 13.
Mode is the most often number. For example 11, 11, 12, 13, 14, 14, 14, 15. The answer would be 14.
range is subtracting the lowest number from the highest number. For example, 11, 12, 13, 14, 15. The answer would be 4.
Answer:
12.264
Step-by-step explanation:
* per would be saying the number of miles the van is running that day
.14 x 87.6
= 12.264
Divide 2080 by 52 then times by one hundred, the answer is 4,000
She would be 26 years old