What is the surface area of this? ignore my

2400cm^2

Step-by-step explanation:

50 * 10 = 500

(40 * 30 / 2) * 2 = 1200

30 * 10 = 300

40 * 10 = 400

Now add them all together.

500 + 1200 + 300 + 400 = 2400

42

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;