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jek_recluse [69]
3 years ago
10

Please help for number 2 :/

Mathematics
1 answer:
hoa [83]3 years ago
7 0

Answer:

25.4

Step-by-step explanation:

the answer is 25.4

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Can I get help with this
Hunter-Best [27]

Answer:

The correct option is;

B) -6

Step-by-step explanation:

The given parameters are;

The line of symmetry of f(x) = The line of the reflection of g(x) over the y-axis

f(x) = 3·x² + b·x + c

From the given graph of g(x), we have;

The vertex point of g(x) = (-1, 8)

The line of symmetry is the line x = -1

The image of the reflection of (x, y) over the y-axis is (-x, y)

The image of the vertex of g(x) following a reflection across the y-axis is (1, 8)

Therefore;

The line of symmetry of the image of g(x) following a reflection over the x-axis is the line x = 1

The line (axis) of symmetry of a quadratic function is the line x = -b/(2·a), which is a line that always go through the vertex of the parabola

Where;

a = The coefficient of x²

b = The coefficient of 'x'

For f(x) = 3·x² + b·x + c, a = 3, and b = b

Given that f(x) and the image of g(x) have the same line of symmetry, we have;

The line of symmetry of f(x) is x = 1

Therefore, from the formula for the line of symmetry, we have;

x = -b/(2·a)

x = 1

By substitution, we have;

1 =  -b/(2·a)

∴ -2·a = b

Given that a = 3, we get;

-2 × 3 = -6 = b

b = -6

3 0
3 years ago
What is the slope of y=5/2x - 4. and what is the y intercept
miskamm [114]

Answer:

Slope is 2/3

y-intercept is 1

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Can someone help me with this problem, please?
Masja [62]

Answer:

Length = 2 ft

Width = 7/4 ft = 1.75 ft

Step-by-step explanation:

Length of room on blueprint = 1/8 *16 = 2 ft

Width of room on blueprint = 1/8 *14 = 7/4 ft = 1.75 ft

8 0
3 years ago
Find the missing length indicated. Leave your answer in simplest radical form.
pickupchik [31]
25

The triangle given by 9, unknown, and 15 and the triangle given by 15, unknown, and x are similar triangles and therefore 9:15 = 15:x

X is 25 in this case
8 0
3 years ago
My area is 93 x 81. what is the square footage
Sidana [21]
What you do is you do 93 x 81.

                             93
                          x 81
                      ------------
                              93
                        + 7440
                      -------------
                           7,533

That's the square footage. Hope it helps!
5 0
4 years ago
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