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Stells [14]
3 years ago
13

F(x) = -7x^2+8x+2 what is the value of the discriminant of f

Mathematics
2 answers:
yan [13]3 years ago
5 0

Answer:

120

Step-by-step explanation:

The discriminant can be written as an expression: b² - 4ac.

We know that a = -7, b = 8, c = 2, since the function f(x) = -7x² + 8x + 2 is in standard form: ax² + bx + 2.

Now let's evaluate the discriminant:

b² - 4ac

= 8² - 4(-7)(2)    (Simplify)

= 64 - 4(-14)

= 64 + 56

= 120

Murrr4er [49]3 years ago
3 0

Answer:

D = 120,    there are 2 real roots for F(x)

Step-by-step explanatU

using the

formula  D = b^2 - 4ac  for discriminant

D =  8^2  - 4*(-7)*2

D = 64  + 56  =  120

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daser333 [38]

Answer:

G(x)=(x-6)^2

which agrees with the answer D of your options

Step-by-step explanation:

Notice that the graph of G(x) has the initial graph shifted horizontally to the right in 6 units, therefore such horizontal shift is accomplished by subtracting the 6 units from the x-variable in the original expression:

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3 0
3 years ago
Y is inversely proportional to x when y=9, x=24
Lisa [10]

Answer:

216

Step-by-step explanation:

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3 years ago
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alexandr402 [8]
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3 years ago
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Ierofanga [76]
<h2>Greetings!</h2><h3>When expanding brackets, you simply multiply whatever is inside the brackets by what is outside:</h3>

(7x * x) + (7x * 20)

<h3>Which would result in the answer being:</h3>

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<h2>Hope this helps!</h2>
5 0
3 years ago
Read 2 more answers
If △ABC ≅ △DEF, then what corresponding side is congruent to side BA? (Enter answer using segment letters only.)
sdas [7]
<h3>Answer is   ED</h3>

note: ED is the same as DE. The order of the segment letters does not matter.

============================================

Explanation:

In the sequence ABC, the letter B is the second letter and A is the first.

So the corresponding segment to BA will have its first slot be the second letter of DEF, and its second slot be the first letter of DEF. That's how I'm getting ED for the answer. It is the same as DE because it's the same segment.

The corresponding sides are congruent due to the CPCTC which stands for "corresponding parts of congruent triangles are congruent".

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