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kvasek [131]
2 years ago
6

Sam is a waiter at a local restaurant where he earns wages of $7 per hour. Sam figures that he also earns about $5 in tips for e

ach person he serves. Sam works 6 hours on a particular day. If n represents the number of people Sam serves that day, which of the following functions could Sam use to figure E, his total earnings for the day? A. E(n) = 7n + 30 B. E(n) = 5n C. E(n) = 5n + 42
Mathematics
2 answers:
lesya692 [45]2 years ago
6 0
C is the answer because the others are wrong
stira [4]2 years ago
5 0
C makes the most sense
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Assoli18 [71]

Answer:

E(t) = [ 4cos(t) , 2 sin(t) ]

Step-by-step explanation:

The elipse ecuacion is of the form:

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In our particular case    x²/16 + y²/ 4 = 1

That form suggests  (x/a)² + (y/b)² =1            

And again in our case    x²/16  + y²/4 = 1                                                       the same shape of                 sin²α +cos²α = 1

So we call x = 4 cos(t )   and the

We need to find y        

x²/16  + y²/4 = 1  

x²/16  + y²/4 = 1   ⇒    (x²  +  4y²) ÷ 16  = 1

Solving for y     (x²  +  4y²)  = 16      ⇒  y²  = ( 16 - x²) ÷4

as   x = 4 cos(t)   ⇒  y²  =  (16 - 16cos²(t)) ÷ 4     y = √4 (1 -cos²(t)

y = 2 sin (t)

So the vector parametrization of the elipse is

E(t) = [ 4cos(t) , 2 sin(t) ]

3 0
2 years ago
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Naddik [55]
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Answer:

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Step-by-step explanation:

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Solution:

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abruzzese [7]

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