2 years ago

If f(x) = 5x2 + 3, find f(-2) =

Mathematics

1 answer:

Brut [27]2 years ago

8 0

Answer:To find this, all you have to do is plug in 3 where x is in the equation, which gives you this:

(

)

(

)

−

. From there, just find the value:

(

)

−

Step-by-step explanation: 13 is the answers sorry i looks like that

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Write an equation that represents"Four less than the difference of half a number and 3 is 20 ."Use X for the variable.

Alex73 [517]

Answer:

{(1/2)x-3}-4=20

That is your answer.

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3 years ago

Which of the following illustrates a phase shift?

Natasha_Volkova [10]

Answer:

A. y = -2 - cos(x-π)

Explanation:

The general form of the trig equation is:

y = A sin (Bx + C) + D

where:

A is the amplitude

$\frac{2\pi}{B}$ is the period

$\frac{-C}{B}$ is the phase shift

D is the vertical shift

Now, let's check the choices:

A. y = -2 - cos(x-π)

$\frac{-C}{B} = \frac{\pi}{1} = \pi$

Therefore, the function has a phase shift of π

B. y = 3 cos(4x)

$\frac{-C}{B} = \frac{0}{4} = 0$

Therefore, the function has no phase shift

C. y = tan(2x)

$\frac{-C}{B} = \frac{0}{2} = 0$

Therefore, the function has no phase shift

D. y = 1 + sin(x)

$\frac{-C}{B} = \frac{0}{1} = 0$

Therefore, the function has no phase shift

Based on the above, the correct answer is A

Hope this helps :)

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3 years ago

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Write the expression of the quotient of 44 and 11

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Answer:

Step-by-step explanation:

44 ÷ 11 = 4

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3 years ago

Anise wants to have longer hair than her sister. Her sister's hair is 2.25 feet long. How long does Anise's hair have to

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The answer has to 2.26 because 2.26 is bigger than 2.25

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3 years ago

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What is the nineteenth term in the sequence 7, 10, 13, 16,...? A 64 B 61 C 57 D 19

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Answer:

B. 61

Step-by-step explanation:

7, 10, 13, 16...

ok so were starting with 7 and adding 3 every time

im going to do 3 times 19 like as if we started with 3 then im going to add 4

3 x 19 = 57

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the 19th term is 61

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3 years ago

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