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s344n2d4d5 [400]
3 years ago
10

How can you find f(2) if f(x) = 3x2 – 2?

Mathematics
2 answers:
Olegator [25]3 years ago
8 0

Answer:

10

Step-by-step explanation:

Plug in 2 for x.

f(2) = 3·(2)²-2

=3·4-2

=12-2

=10

NikAS [45]3 years ago
5 0

Answer:

Step-by-step explanation:

Square 2. Multiply the result by 3, and then subtract 2.

Easy at that...

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If x -9 is a factor of x^2 -5x-36 , what is the other factor ?
faust18 [17]

Answer:

(x + 4) (x - 9)

Step-by-step explanation:

Factor the following:

x^2 - 5 x - 36

The factors of -36 that sum to -5 are 4 and -9. So, x^2 - 5 x - 36 = (x + 4) (x - 9):

Answer: (x + 4) (x - 9)

3 0
2 years ago
Which of the following expressions is equivalent to -9?
FromTheMoon [43]

B because there is only one negative and -63 divided by 7 equals -9. If it were -7 divided by 63 that would give you an answer in decimal form.

6 0
3 years ago
In circle o, the length of radius OL is 6 cm and the length
AlekseyPX

Answer:

14.2cm

Step-by-step explanation:

The diagram representing the circle and its attributes has been attached to this response.

<em>As shown in the diagram;</em>

The circle is centered at o,

The length of radius OL = 6cm

The length of the arc LM = 6.3cm

The angle MON = 75°

The angle LOM = θ

<em>Remember that;</em>

The length, L, of an arc is given by;

L = (θ / 360) x (2πr)         -------------(i)

Where;

θ is the angle subtended by the arc

r = radius of the circle.

Using the formula in equation (i), let's calculate the angle θ subtended by arc LM as follows;

L = (θ / 360) x (2πr)  

Where;

L = length of arc LM = 6.3cm

r = radius of the circle = length of radius OL = 6cm

<em>Substitute these values into the equation to get;</em>

6.3 = (θ / 360) x (2 x π x 6)

6.3 = (θ / 360) x (12 x π)

6.3 = (θ / 30) x (π)              [Take π = 22/7]

6.3 = (θ / 30) x (22 / 7)

θ = \frac{6.3*30*7}{22}

θ = 60.14°

Therefore, the angle subtended by arc LM is 60.14°

Now, from the diagram,

The angle subtended by arc LMN is;

θ + 75° = 60.14° + 75° =  135.14°

Let's now calculate the length of arc LMN using the same equation (i)

L = (θ / 360) x (2πr)  

Where;

L = length of arc LMN

θ = angle subtended by LMN = 135.14°

r = radius of the circle = length of radius OL = 6cm

<em>Substitute these values into the equation;</em>

L = (135.14° / 360°) x (2 x π x 6)             [Take π = 22/7]

L = 14.15cm

Therefore, the length of arc LMN is 14.2cm to the nearest tenth.

6 0
3 years ago
To show that TRK= TUK by the SAS postulate, what additional information is necessary?
Anni [7]

Answer:

RTK = UTK

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the equation 5(-6m+7)
steposvetlana [31]

The correct answer to your question is −

-30 m + 35

Hope this helps!

BTW can I have brainliest?

6 0
3 years ago
Read 2 more answers
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