Type the integer that makes the following subtraction sentence true: 428 - what = 1,212

-784

Step-by-step explanation:

428 - ? = 1,212

428 - 1,212 = ?

428 - 1,212 = -784

? = -784

hope it helps!

- 784

Step-by-step explanation:

428 - x = 1,212

1,212 - 428 = - x

- x = 784

x = - 784

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;

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21