I think of a number i multiple it by 5 i then subtract 19 finally i double the result the final number is 22 what number did i think of

To solve this problem, you read the problem backwards and to the opposite of that function.

Thus the number that is thought of is 6

Hope that helps!

Unknown value: X

(5X-19)*2=22

5X-19=22/2

5X-19=11

5X=30

X=6

b

step-by-step explanation:

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;