A rectangle is 6 more than 4 times as long as it is wide. If the perimeter is 42, how long is the rectangle?

Solution

2(4x + 6) = 8x + 12

8x + 12 + 2x = 42

10x + 12 = 42

10x = 30

x = 3

Therefore the width is 3cm.

3cm * 2 = 6

42 - 6 = 36

36 / 2 = 18

Therefore the length is 18cm

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.

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation: