On a primary school parents were asked the number of hours they spend to help their children in home work there were 90 parents who helped 1/2 hour to 1 1/2 hours . 20% of parents helped more than 1 1/2 hours 30% said that they helped for 1/2 hour to 1 1/2 hours per day the rest 50% did not help at all
(i)how many parents were surveyed
(ii)how many said they did not help

Step-by-step explanation:

Let x be the number of parents surveyed.

30% of x = 90

Total number of parents surveyed = 300

Number of parents who did not help = 50%of 300

Number of parents who did not help = 150

hey there!

if she's saving for six months, let's divide the total number we need for the trip by six, dividing it into the amount that needs to be saved for each month.

500 ÷ 6 =

she needs to save at least this amount each month, so we should use this symbol: ≥

let x be the amount she saves each month.

your final answer is x ≥

hope this !

d

step-by-step explanation:

given

y + 3 = - 4(x - 2) ← distribute the parenthesis

y + 3 = - 4x + 8 ( subtract 3 from both sides )

y = - 4x + 5 → d