What is the complement of rolling a 3 on a die

Part of a train timetable is shown.

Aberystwyth

Shrewsbury

Birmingham

08 30

10 17

12 30

14 19

13 55

16 05

17 20

a)

Bob catches the 12 30 train from Aberystwyth. He arrives in Shrewsbury 8 minutes late. What time does he arrive in Shrewsbury?

b) How long is Bob's journey from Aberystwyth to Shrewsbury? Give your answer in minutes.

minutes

11 30

15 30

Judy catches the 12 30 train from Aberystwyth.

She arrives in Shrewsbury on time.

She attends a job interview.

She gets back to Shrewsbury station 1 hour and 50 minutes later. Is she back in time to catch the 16 05 train to Birmingham?

You must show your working.

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant