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3 years ago

5

I suck at story problems can I please have help?

1 answer:

Mamont248 [21]3 years ago

6 0

a.

b=cost per burrioto

t=cost per taco

b.

3 burritos and 4 tacos costs 11.33; 3b+4t=11.33

9 burritos and 4 tacos costs 22.07; 9b+4t=22.07

c. solve

3b+4t=11.33

9b+4t=22.07

mulitply irst equation by -1 and add to 2nd to cancel t's

-3b-4t=-11.33

<u>9b+4t=22.07 +</u>

6b+0t=10.74

6b=10.74

divide both sides by 6

b=1.79

subsitute back

3b+4t=11.33

3(1.79)+4t=11.33

5.37+4t=11.33

4t=5.96

divide both sides by 4

t=1.49

solution: 1 taco costs $1.49 and 1 burrito costs $1.79

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The caller times at a customer service center has an exponential distribution with an average of 22 seconds. Find the probabilit

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Step-by-step explanation:

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The probability distribution (pdf) of the exponential distribution is given by;

$f(x) = \lambda e^{-\lambda x} ; x > 0$

Here, $\lambda$ = exponential parameter

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