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ruslelena [56]
3 years ago
9

The function f is defined by f(x)=-x2+2x-7. What is the value of f(-3)?

Mathematics
1 answer:
Helen [10]3 years ago
6 0

Answer:

Option A f(-3)=-22

Step-by-step explanation:

we have

f(x)=-x^{2}+2x-7

we know that

f(-3) is the value of f(x) when the value of x is equal to -3

so

For x=-3

substitute the value of x=-3 in the equation

f(-3)=-(-3)^{2}+2(-3)-7

f(-3)=-9-6-7

f(-3)=-22

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X^2 = 9x + 6
x^2 - 9x - 6 = 0
use quadratic formula : (-b (+-) sqrt b^2 - 4ac) / (2a)
a = 1, b = -9, c = -6
now we sub

x = (-(-9) (+-) sqrt -9^2 - 4(1)(-6)) / 2(1)
x = 9 (+-) sqrt 81 + 24)/2
x = 9 (+-) sqrt 105) / 2
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Based on the data in this two-way table, if a flower is picked at random, what is the probability of getting a yellow flower?
Marysya12 [62]

Answer:

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Solve |2x - 5| = 4 I dont know what you solve for
ICE Princess25 [194]

Hello!

Answer:

\huge\boxed{x = 1/2, 9/2}

|2x - 5| = 4

Solve for the negative and positive expressions:

2x - 5 = 4

2x = 9

x = 9/2

------------

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6 0
3 years ago
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Answer:

n = -33

Step-by-step explanation:

Let n = number

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Subtract 2n from each side

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2 years ago
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