Reema and sohini bought (x^2 - 9) mangoes. they divided into (x+3) groups. each group has three rotten mangoes. how many good mangoes does each group contain? pls give me answer

x - 6

Step-by-step explanation:

divide number of mangoes bought by number of groups, that is

= ← numerator is difference of squares

cancel the factor (x + 3) on numerator/denominator

number in each group = x - 3

subtract 3 rotten mangos from group for good mangoes

good mangoes = x - 3 - 3 = x - 6

its 50 miles away from the starting point

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;