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crimeas [40]
3 years ago
9

Please help meee and show all steps please!!!ty

Mathematics
1 answer:
kolbaska11 [484]3 years ago
3 0

Answer:

x = -4 and x = 5

Step-by-step explanation:

Since x^2 + 2x and 3x + 20 both equal to y, we know that the expressions equal to each other. We can write a new equation base on that.

x^2 + 2x = 3x + 20

Now we solve the equation.

x^2 + 2x = 3x + 20

x^2 - x = 20

x^2 - x - 20 = 0

(x + 4) (x - 5) = 0

x + 4 = 0 ; x -5 = 0

x = -4 ; x = 5

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Answer:

1/5 pound

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6 0
3 years ago
2) Chicken soup is 3 cans for $0.55. How much would a<br> dozen soup cans cost?
Elenna [48]

Answer:

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Step-by-step explanation:

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Read 2 more answers
A diameter of a circle has endpoints P(-10,-2) and Q(4,6).
kompoz [17]

Answer:

a. (-3, 2).

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c.  (x + 3)^2 + (y - 2)^2 = 65

Step-by-step explanation:

a.  The center is the midpoint  of the diameter PQ.

= (-10+4)/2, (-2+6)/2

= (-3, 2).

b. The radius is the distance from the center to a point on the circle.

Take the point (4, 6):

The radius = √((-3-4)^2 + (2-6)^2)

= √65.

c.  The equation of the circle is:

Using the standard form

(x - h)^2 + (y - k)^2 = r^2  where  (h, k) is the center and r = the radius:

it is (x - (-3)^2 + (y - 2) = 65

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4 0
3 years ago
Read 2 more answers
I don’t need you to explain just answer.
Bumek [7]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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