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2 years ago

Find the zeros and the axis of symmetry of the parabola.

Mathematics

2 answers:

emmainna [20.7K]2 years ago

6 0

Answer:

ok i think its D

Step-by-step explanation:

2,4; x= 3

i am not 100% but like i looked up examples and that seems to be the only one that looks right

Vika [28.1K]2 years ago

6 0

Answer:

d. zeros: 2, 4 axis of symmetry: x = 3

Step-by-step explanation:

The zeros are the values of x where the graph crosses the x-axis

zeros = 2, 4

The axis of symmetry is the vertical line thru the vertex of the parabola

The vertex is (3, -1), so x = 3 is the axis of symmetry

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Find an exponential function that passes through each pair of points. (2,1.75) & (-2,28)

dusya [7]

Answer:

$f(x) = 7\, ((1/2)^{x})$ .

Step-by-step explanation:

An exponential function is typically in the form $f(x) = a\, (b^{x})$ , where $a$ and $b$ ( $b > 0$ ) are constants to be found.

In this question:

$f(2) = 1.75$ means that $a\, (b^{2}) = 1.75$ .

$f(-2) = 28$ means that $a\, (b^{-2}) = 28$ .

Divide one of the two equations by the other to eliminate $a$ and solve for $b$ .

The number of the right-hand side of the second equation is larger than that of the first equation. Hence, divide the second equation with the first:

$\displaystyle \frac{a\, (b^{-2})}{a\, (b^{2})} = \frac{28}{1.75}$ .

$\displaystyle b^{-4} = 16$ .

$b^{-1} = 2$ .

$\displaystyle b = \frac{1}{2}$ .

Substitute $b = (1/2)$ back into either equation (for example, the first equation) and solve for $a$ :

$a\, ((1/2)^{2}) = 1.75$ .

$a = 7$ .

Substitute $a = 7$ and $b = (1/2)$ into the other equation. That equation should also be satisfied.

Therefore, this function would be:

$f = 7\, ((1 / 2)^{x})$ .

8 0

2 years ago

45 liters of helium at $.42 per liter

earnstyle [38]

Answer:

The answer is 45 liters = $1890

Step-by-step explanation:

As 1 liter of helium = $42

So multiply 45 liters with $42

Equals $ 1890 for 45 liters of heluim

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2 years ago

Can somebody help me as soon as possible I’ll give brainliest

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Hi hi hi hi hi hi hi hi hi hi hi hi hi

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2 years ago

275 miles on 14 gallons pls hurry

vaieri [72.5K]

Answer:

1 gallon per 19.64mi

Step-by-step explanation:

275/14 =19.6428571429

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2 years ago

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Find an expression which represents the difference when (-3x + 5y) is subtracted

lubasha [3.4K]

Step-by-step explanation:

-3x+5y-(-6x)+3y

-3x+5y+6x+3y

-3x+6x+5y+3y

3x+2y.

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2 years ago