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2 years ago

Can someone explain this question?I know the answer is t=0 but don't know why:(

Mathematics

2 answers:

irina [24]2 years ago

6 0

Uh, I think this is so because the quadratic graph is symmetrical about the y-axis. And the equation of line of symmetry usually is x is equals to something since the line of symmetry is a vertical line. Hence the equation of line of symmetry in this case is t=0 because the line is at the y axis where the value of x axis is 0

Dafna1 [17]2 years ago

5 0

Answer:

Step-by-step explanation:

Your axis of symmetry is always going to be related to the x-point of your vertex. In this case, it looks like the vertex of the parabola is (0, 9). The vertex is the highest (or lowest) point of the parabola and is even on both sides. This means that, in order to be symmetrical, you would need to divide this parabola down "0."

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Brainliest and 50 points

Annette [7]

Answer:

Using the distance formula, when I plugged in the information, the answer I got was the square root of 85. (B)

explanation:

C(x₁ , y₁) and T(x₂ , y₂) OR C(0,4) and T(-6,-3)

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4 0

2 years ago

Read 2 more answers

4 3/5 - 4/5 = ? please explain it ixl

miskamm [114]

Answer:

$\frac{19}{3 } \: or \: 3 \frac{4}{5}$

Step-by-step explanation:

Change the mixed number into a regular fraction.

$\frac{23}{5} - \frac{4}{5}$

Subtract the numerator.

$\frac{19}{5}$

As a mixed number:

$3 \frac{4}{5}$

8 0

2 years ago

If f(x) =4x2 - 8x - 20 and g(x) = 2x + a, find the value of a so that the y-intercept of the graph of the composite function (fo

amm1812

Answer:

The possible values are a = -2.5 or a = 4.5.

Step-by-step explanation:

Composite function:

The composite function of f(x) and g(x) is given by:

$(f \circ g)(x) = f(g(x))$

In this case:

$f(x) = 4x^2 - 8x - 20$

$g(x) = 2x + a$

$(f \circ g)(x) = f(g(x)) = f(2x + a) = 4(2x + a)^2 - 8(2x + a) - 20 = 4(4x^2 + 4ax + a^2) - 16x - 8a - 20 = 16x^2 + 16ax + 4a^2 - 16x - 8a - 20 = 16x^2 +(16a-16)x + 4a^2 - 8a - 20$