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1: 12 km

2: 10.5 km

3: 3.5 mm

4: 12 m

5: 5 m

6: 49.5 cm

Step-by-step explanation:

To find the area of any triangle, multiply the height by the base, then divide by two.

Triangle are equal (H x B) ÷ 2

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;