4x
+5
write a simplified equivalent expression for the sum of their ages.

Step-by-step explanation:

y=4x+5+x

y=5x+5

9x-5   (only when x=2) (age is double of  4)

Step-by-step explanation:

4x+5

4*2 +5 = 13

4x +5x-5 =13

9x-5=13

9*2-5=13

18-5=13

 WITH OTHER NUMBERS (x=2)

3x+5

3*2 +5 =11

3*2 +5*2 -5 =11

8*2-5=11    (8x-5)=11

16-5=11

its a, i had the same answer, its from study island right

step-by-step explanation:

0 and 5 minutes

step-by-step explanation:

given that one morning eight buses arrive late by the number of minutes given below:

0 8 2 6 9 2 0 7 8

write these in ascending order

0   0 2 6 7 8 8 9

in the afternoon two more buses arrive at the bus stop say by x and y minutes late.

total number of buses = 10

median = average of 4th and 5th after arranging in ascending order

since 4th entry is 6, the values of x and y should be below 6

also given 0 is the mode so either x or y or both should be 0 because then only 0 gets the maximum frequency and hence mode

thus we have

0 0 0 2 6 7 8 8 9 and another unknown entry which is below 6.

since median is 3.5, we have the unknown entry to be 5 only because then only median =( 2+5)/2

thus the after noon buses were late by 0 and 5 minutes.