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Alona [7]
4 years ago
6

Write the quadratic equation whose roots are -5 -4 and whose leading coefficient is 4

Mathematics
1 answer:
vfiekz [6]4 years ago
4 0

Answer:

y = 4x² + 36x + 80

Step-by-step explanation:

Since the roots are x = - 5 and x = - 4 then the factors are

(x + 5) and (x + 4)

The equation is the product of the factors

y = (x + 5)(x + 4) and with leading coefficient of 4 is

y = 4(x + 5)(x + 4) ← expand factors

  = 4(x² + 9x + 20)

  = 4x² + 36x + 80

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PolarNik [594]

Answer:

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Step-by-step explanation:

Use the formula 180\times(n-2) to find the sum of the angles in a polygon, given <em>n</em> sides. This formula tells us the angles of this pentagon must add to 540 (180\times(5-2)=540).

So, we can setup an equation:

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Solve for z:

200+5z=540 Combine like terms

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Therefore, the value of z = 68.

6 0
4 years ago
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Tamiku [17]

Answer:

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i havent done fractions in a long time but this is what i got from memory

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3 years ago
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Tems11 [23]

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snow_lady [41]
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Answer:

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Step-by-step explanation:

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