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Tcecarenko [31]

3 years ago

11

Which rates are equal? Choose 2. A. $28 per 8 salads B. $42 per 12 steaks C. $45 per 18 rolls of paper towels D. $57 per 20 boxe

s of rolls E. $26 per 10 bottles of soda

1 answer:

Assoli18 [71]3 years ago

5 0

A = 3.5
b = 3.5
c = 2.5
d = 2.85
e = 2.6
The two unit rates that are equal are a and b
28 per 8 salads and 42 per 12 steaks have equal unit rates.

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Answer:

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Step-by-step explanation:

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We are given that Southwest Air had the best rate with 80 % of its flights arriving on time.

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where, n = number of trials (samples) taken = 18 Southwest flights

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= $\binom{18}{13}\times 0.20^{13} \times 0.80^{5}+ \binom{18}{14}\times 0.20^{14} \times 0.80^{4}+ \binom{18}{15}\times 0.20^{15} \times 0.80^{3}+ \binom{18}{16}\times 0.20^{16} \times 0.80^{2}+ \binom{18}{17}\times 0.20^{17} \times 0.80^{1}+ \binom{18}{18}\times 0.20^{18} \times 0.80^{0}$

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