Artie needs to save $450 to buy the new bicycle that he wants. He currently has $300. What percent of the new cost of a new bicycle has he saved? Claire decides to solve this problem by setting up a proportion. What should her proportion look like?

A.) 300/100 + x/450

B.) x/100 = 450/300

C.) x/100 = 450/300

D.) 450/100 = x/300

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step-by-step explanation:

125 yards

step-by-step explanation:

i take 75 plus 50.

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;