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saw5 [17]
2 years ago
11

Anna bought 8 tetras and 2 rainbow fish for her aquarium. The rainbow fish cost​ $6 more than the tetras. She paid a total of​ $

37.
Which of the following are​ true? Select all that apply.
A.
An equation to find the cost​ t, in​ dollars, of a tetra is 8 t + 2 t + 6 = 37.
B.
The cost of 4 tetras is the same as the cost of a rainbow fish.
C.
Reducing the number of rainbow fish by 1 would result in a total cost of​ $28.50.
D.
An equation to find the cost​ r, in​ dollars, of a rainbow fish is 8 r + 2 (r + 6) 37.
E.
One rainbow fish plus 5 tetras cost​ $21.
Mathematics
2 answers:
Rudiy272 years ago
8 0

The answer is, C and E

____ [38]2 years ago
5 0

Answer:

C, D, and E

Step-by-step explanation:

When trying to solve for the cost of each item you will find a rainbow fish is $8.50 and a tetra is $2.50. If you use that information to solve the other answer choices C, D, and E would be correct

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64 x^2 ( x^2 - 1) = 1

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64 x^4 - 64 x^2 - 1 = 0

x = 1.00766 , - 1.00766

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f(- 1.00766) = arcsec(- 1.00766) − 8( - 1.00766)

f( - 1.00766 ) = 11.07949

x = 1.00766

f(1.00766) = arcsec(1.00766) − 8( 1.00766)

f(1.00766 ) = -7.93790

relative maximum (x, y) = (- 1.00766 , 11.07949 ) relative minimum (x, y) = ( 1.00766 , -7.93790  )


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Answer:

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Step-by-step explanation:

Consider the provided information.

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