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Arturiano [62]
4 years ago
13

Mischa wrote the quadratic equation 0 = –x2 + 4x – 7 in standard form. What is the value of c in her equation?

Mathematics
1 answer:
inysia [295]4 years ago
7 0
Standard form of an equation can be represented by ax^2 + bx + c = y. where a b are coeficients and c is a constant value. for your equation to work we have to say:
a = -1
b = 4
c = -7

you have to be sure to put the negative value. if i said
a = 1
b = 4
c = 7

and i plugged these in i would get:
(1)x^2 + (4)x + (7)

which becomes
x^2 + 4x + 7

this is not right. if i used the first values i stated then:
(-1)x^2 + (4)x + (-7)
-x^2 + 4x - 7

this is correct
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Answer:

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Answer: <u>96</u> sq ft.

Step-by-step explanation:

      First, we will find the area of the rectangular sides. Since the triangle is an equilateral triangle, all the rectangles will be the same size.

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             A = (10 ft) * (3 ft)

             A = 30 ft²

             30 ft² * 3 = 90 ft²

      Next, we will find the area of the two triangles.

             A = \frac{b*h}{2}

             A = \frac{3*2}{2}=\frac{6}{2} =3

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      Lastly, we will add them together for the total surface area.

90 ft² + 6 ft² = 96 ft²

4 0
2 years ago
Select why this equation is true or false without adding.
Black_prince [1.1K]

Answer:

The answer is c.

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answer: got u bro

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5 0
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