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Anna11 [10]
3 years ago
13

Farrah needs an electrician and must decide between 2 companies. For a service visit, Company A charges $50 to send an electrici

an plus $40/h. Company B charges $60 to send an electrician plus $36/h. The graph that models this situation is shown here.
According to the graph, how long must each electrician work in order for the two to charge equal amounts?
Mathematics
2 answers:
ss7ja [257]3 years ago
4 0
Company B. Its kinda commen sense.
weqwewe [10]3 years ago
3 0
Each line represents a technician. So if you want to know at what time the charges are equal, you need to see where the lines intersect. In this case, its 2.5 hours. 
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Answer:

C) 2/3

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3 years ago
Jordan is saving to buy a computer that costs $425. So far she has saved $125, and she adds $20 to her savings each week. How ma
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Answer:

15 more weeks

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425 - 125 (what shes already saved)

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2 years ago
Find a third-degree polynomial equation with rational coefficients that has roots -4 and 6 + i.
dolphi86 [110]

Answer:

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Step-by-step explanation:

Given that x = 6 + i is a root then x = 6 - i is also a root

Complex roots occur as conjugate pairs.

The factors are therefore (x - (6 + i)) and(x - (6 - i))

Given x = - 4 is a root then (x + 4) is a factor

The polynomial is the product of the factors, that is

p(x) = (x + 4)(x - (6 + i))(x - (6 - i))

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      = (x + 4)(x² - 12x + 37) ← distribute

      = x³ + 4x² - 12x² - 48x + 37x + 148

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3 years ago
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