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FrozenT [24]
3 years ago
10

-x²+4x+6 axis of symetry

Mathematics
1 answer:
Lelu [443]3 years ago
7 0

Answer:

x = 2

Step-by-step explanation:

x = \frac{-b}{2a}

a = -1  b = 4  c = 6

x = \frac{-4}{2(-1)}

x = 2

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Step-by-step explanatiicdeon:

4 0
3 years ago
What is the vertex of y=x^2+4x+3
AnnyKZ [126]

Answer:

(-2, -1)

Step-by-step explanation:

This is a quadratic equation in standard form, and a = 1, b = 4 and c = 3.

The x-coordinate of the vertex is given by the formula

        -b                                                                         -4

x = --------- which here has the numerical value x = -------- = -2

        2a                                                                           2

Finally, we evaluate y=x^2+4x+3 at x = -2 to find the y-coordinate of the vertex:

y = (-2)^2 + 4(-2) + 3 = -1

The vertex is at (-2, -1).

7 0
3 years ago
Mr Yadav buys a radio for Rs 640 and sells it for Rs 672 Find it's profit​
MariettaO [177]

Answer:

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7 0
3 years ago
It takes machine A x hours to manufacture a deck of cards that machine B can manufacture in y hours. If machine A operates alone
nlexa [21]

Answer:

The expression that shows how long the two machines will operate simultaneously is:

\frac{y(100x-z)}{x+y}

Step-by-step explanation:

We know that:

x: hours to manufacture a deck of cards for machine A

y: hours to manufacture a deck of cards for machine B

z: hours that machine A operates alone

The number of decks manufactured only by machine A is:

\frac{z}{x}

So, the remaining decks are given by:

100-\frac{z}{x}=\frac{100x-z}{x}

Then, the combined rate of machines A and B would be:

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The work-rate formula is:

Amount= Rate \times Time

Hence, the time that the two machines work simultaneously is:

Time=\frac{Amount}{Rate}

Time=\frac{Amount}{Rate} =\frac{\frac{100x-z}{x} }{\frac{x+y}{xy} } ={\frac{100x-z}{x} \times \frac{xy}{x+y}=\frac{y(100x-z)}{x+y}

3 0
4 years ago
What type of quadrilateral is formed by the points A(0, 4), B(4, 0), C(0, -3), and D(-4, 0)?
olchik [2.2K]
This is the image the points form, if you know your quadrilaterals, this should make it easier to picture and label. Need any further explanation?

5 0
3 years ago
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