The sum of a number and 20 is no more than the sum of the square of the number and 9. Which of the following inequalities can be used to determine this unknown number?

A.
x + 20 ≤ (x + 9)2
B.
x + 20 ≤ x2 + 9
C.
x + 20 < (x + 9)2
D.
x + 20 < x2 + 92

x+20 ≤ x²+9

Step-by-step explanation:

the options you gave didnt have any square options, so imma just guess you meant this? if not, let me know.

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

answer: x=3 and y=4

step-by-step explanation: