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Fed [463]
3 years ago
5

Determine whether f(x)=2x^2 -6x +k has a maximum or minimum value, and determine the maximum or minimum value.

Mathematics
1 answer:
kicyunya [14]3 years ago
4 0
Since it is a parabola if there is no negative sign in front of the equation then it will have a minimum.

The standard form of a quadratic is ax^2+bx+c
When a>0 then the equation will have a minimum.
When a<0 then the equation will have a maximum.
Honestly I have no idea what to do after that. The k is throwing me off.
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5 watermelons 6 cantaloupes cost $54. 4 watermelons and 8 cantaloupes $56. how much is a cantaloupe
GREYUIT [131]

Answer:

A cantaloupe costs $4

Step-by-step explanation:

Watermelons = W

Cantaloupes = C

Write given statements as equations

5W + 6C = 54

4W + 8C = 56

Simplify the second equation

4W + 8C = 56

Subtract 8C from both sides of the equation

4W = 56 - 8C

Divide both sides of the equation by 4

W = 14 - 2C

Substitute into second equation

5W + 6C = 54

5(14 - 2C) + 6C = 54

Multiply 5(14 - 2C)

70 - 10C + 6C = 54

Add -10C + 6C

70 - 4C = 54

Add 4C to both sides of the equation

70 = 54 + 4C

Subtract 54 from both sides of the equation

16 = 4C

Divide both sides of the equation by 4

C = 4

A cantaloupe costs $4

5W + 6(4) = 54

Multiply 6(4)

5W + 24 = 54

Subtract 24 from both sides of the equation

5W = 30

Divide both sides of the equation by 5

W = 6

A cantaloupe costs $4

A watermelon costs $6

Hope this helps :)

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