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Cerrena [4.2K]
3 years ago
9

If f(x)=3x^2 +x-2, then f(-2)= *12 *-16 *8 *32 help!

Mathematics
1 answer:
uysha [10]3 years ago
8 0
8 is the answer

Ignore this part, Brainly wants more than 20 characters
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The graph of a sinusoidal function has a minimum point at (0, - 10) and then has a maximum point at (2, - 4) Write the formula o
AleksAgata [21]

Answer:   \bold{y=3sin\bigg(\dfrac{\pi}{2}x-\dfrac{\pi}{2}\bigg)-7}

<u>Step-by-step explanation:</u>

Minimum: (0, -10)

Maximum: (2, -4)

y = A sin (Bx - C) + D

  • Amplitude (A) = (Max - Min)/2
  • Period = 2π/B   →   B = 2π/Period
  • Phase Shift = C/B     →    C = B × Phase Shift
  • Midline (D) = (Max + Min)/2

A=\dfrac{-4-(-10)}{2}\quad =\dfrac{-4+10}{2}\quad =\dfrac{6}{2}\quad =\large\boxed{3}

\text{x-value of Max minus x-value of Min}= \dfrac{1}{2}\text{Period}\\\\2 - 0 = \dfrac{1}{2}P\quad \rightarrow \quad P=4\\\\\\B=\dfrac{2\pi}{P}\quad =\dfrac{2\pi}{4}\quad =\large\boxed{\dfrac{\pi}{2}}\\

D = \dfrac{\text{Max + Min}}{2}\quad = \dfrac{-4+(-10)}{2}\quad =\dfrac{-14}{2}\quad =\large\boxed{-7}

Sin usually starts at (0, 0).  For this graph, the midline touches 0 when x = 1 so the Phase Shift = 1.

C = B \times \text{Phase Shift}\quad = \dfrac{\pi}{2}\times 1\quad =\large\boxed{\dfrac{\pi}{2}}

A=3, \quad B=\dfrac{\pi}{2}, \quad C=\dfrac{\pi}{2},\quad D=-7\\\\\rightarrow \quad \large\boxed{y=3\sin \bigg(\dfrac{\pi}{2}x-\dfrac{\pi}{2}\bigg)-7}

3 0
2 years ago
Liz has two gardens and wants to build a fence around each. She wants to buy all the fencing at one time. The diagram below sho
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Answer:

C) 22x+16

Step-by-step explanation:

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22x+16

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2 years ago
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If jack has 10 apples an sally eats 4 how many apples does jack have?
nignag [31]

Answer:

Jack would have 6 apples left.

Step-by-step explanation:

If Jack had 10, and sally ate 4. You would do 10 - 4 to get 6.

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Answer:

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Look at C    for 2 hours add'l past the initial 2 hours you are charged 14.50

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What is y + 10 = -3(x + 10) in slope-intercept form?
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