Consider this equation: 0B = 21. Is the equation always false, no matter what value you give the variable? Justify your answer.

because the variable is being multiplied by 0.

Step-by-step explanation:

the B in the equation is just a place holder for any number you can think of.

the problem with that is that any number times 0 will always give you 0, so the equation will look like this now

0 = 21

this equation is false because 0 is not equal to 21.

21 is equal to 21.

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;