Which pair shows equivalent expressions?

Option A.

Step-by-step explanation:

Option A. 3(x + 2) = 3x + 6

L.H.S. = R.H.S.

So equivalent expressions.

Option B. (3x + 2x) = 5x ≠ x² ( 3 + 2 )

Expressions are not equivalent L.H.S. ≠ R.H.S.

Option C. R.H.S. 3(x+2) = 3x + 6 ≠ L.H.S. (3x + 2)

Expression are not equivalent.

Option D. L.H.S. -3(2+x) = -6 -3x ≠ - 6x - 3 (R.H.S.)

Therefore, expressions are not equivalent.

Option A. is the answer.

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: the two figures are congruent.

step-by-step explanation: they're congruent because figure efgh is reflected across the x and y axis but it was also rotated.

hope it !