How many grams of hydrocortisone are in a 120g of 4% ointment

To answer this, you can use a proportion.

We're trying to figure out what a portion of the 120g tube of ointment so that is our first side of the proportion: ?/120

We know that we can represent percentages as fractions by placing the percent over 100. So this is our second side of the proportion: 4/100

Our partially completed proportion is this: ?/120=4/100

Cross multiply 120 and 4: 120*4=480

Divide the product by 100: 480/100=4.8

So, there is 4.8g of hydrocortisone in the ointment.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

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;