There are only red sweets and yellow sweets in a bag. There are n red sweets in the bag.
There are 8 yellow sweets in the bag.
Sajid is going to take at random a sweet from the bag and eat it.
He says
that the probability that the sweet will be red is
7
10
7
(a) Show why the probability cannot be
10

Step-by-step explanation:

Red = n

Yellow = 8

Total = n+8

P(Red sweets) = n/n+8

7/10=n/n+8

10n=7n+56

10n-7n=56

3n=56

n=56/3=18.66666

Sweets cannot be a decimal number. It should be a whole number so it cannot be 7/10

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google

$18 was the price of the t-shirt

step-by-step explanation: