In a scale drawing of a house, 1 inch = 4 1/2 feet. If the length of a kitchen is 2 1/4 inches on the scale drawing, what is the actual length, in feet, of the kitchen?

A 2
B 6 3/4
C 8 1/8
D 10 1/8

(D) 10 1/8

Step-by-step explanation:

The info we are given is that 1 inch = 4.5 feet.

Now we just need to multiply both sides to get 2.25 inches on the left side.

1 inch = 4.5 feet

x2.25 = x2.25

2.25 inches = 4.25 feet *2.25

2.25 inches = 10.125 feet = 10 1/8 feet (D)

answer: h

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;