The table gives information about the times taken, in minutes, by 22 students to cycle a race.
Time (t minutes) Frequency
15 <t< 20
4
20 <t< 25
1
25 <t< 30
7
30 <t< 35
10
Work out an estimate for the mean time.
Give your answer in minutes and correct to 3 significant figures.
+
Total marks: 3​

b

step-by-step explanation:

given

- 2 (3x + 12y - 5 - 17x - 16y + 4 )

simplify the parenthesis by collecting like terms

= - 2 (- 14x - 4y - 1) ← distribute the parenthesis by - 2

= 28x + 8y + 2 → b

a

step-by-step explanation:

u take $30 minus $24. the answer/original($30)

for a it would be 24 children.

for b i don't understand the question. is it saying for each individual person they pick 5 reds to 7 greens or is it the whole group. clarify and i hope this can you.

step-by-step explanation:

hello! just here for points! though i wish i knew!