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3 years ago

Why do we use the quadratic formula as opposed to trying to solve using factoring

1 answer:

8 0

Sometimes there is no apparent way to factor it by hand /(the factors are decimals or imaginary). To try and factor these problems is nearly impossible in your head.

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Find an equation of the plane through the point (−5,−1,2) with normal vector ????=⟨−1,−5,2⟩.

Ganezh [65]

Answer:

$x + 5y - 2z + 14 = 0$

Step-by-step explanation:

A plane that passes through the point $(x_{0}, y_{0}, z_{0})$ with a normal vector of $(a,b,c)$ has the following equation, initially:

$a(x - x_{0}) + b(y - y_{0}) + c(z - z_{0}) = 0$

After we solve this, we have

$ax + by + cz + d = 0$

In this problem, we have that:

$(x_{0}, y_{0}, z_{0}) = (-5,-1,2)$

$(a,b,c) = (−1,−5,2)$

$a(x - x_{0}) + b(y - y_{0}) + c(z - z_{0}) = 0$

$-1(x - (-5)) - 5(y - (-1)) + 2(z - 2) = 0$

$-(x + 5) - 5(y + 1) + 2(z - 2) = 0$

$-x - 5 - 5y - 5 + 2z - 4 = 0$

$-x - 5y + 2z - 14 = 0$

Multplying everything by -1

$x + 5y - 2z + 14 = 0$

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3 years ago

Which representation illustrates all the possible outcomes of flipping a coin and rolling

zaharov [31]

Answer:

Step-by-step explanation:

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3 years ago

All of the following solid figures except a _____ have two bases.

wolverine [178]

All of the following solid figures except a square pyramid have two bases. The correct option among all the options that are given in the question is the last option or the fourth option. Except for the square pyramid, the other options in the question have two bases and so can be avoided as an answer to the question.

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3 years ago

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Turn 9/4 into a mixed number

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2 1/4 you divide 4 into nine and minus the remainder

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The quotient of 13 ÷ 24 is a decimal number. Which digit in the quotient is overlined?

alexgriva [62]

Answer: