3 years ago

Find the x-intercepts for the parabola defined by this equation: y=-3x^2-6x+9

Mathematics

1 answer:

JulijaS [17]3 years ago

7 0

X=1,
X=-3
Use Photomath it helps

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What are the amplitude, period, and phase shift of the given function? f(t)=-1/2sin(3t-2pi)

Romashka [77]

Answer:

The $amplitude=|A|=\frac{1}{2}$ , $period=3$ and $\text{phase shift}=\frac{2\pi}{3}$ .

Step-by-step explanation:

The given function is

$f(t)=-\frac{1}{2}\sin (3t-2\pi)$ .... (1)

The general form of sine function is

$F(t)=A\sin (Bt-C)+D$ ....(2)

where, |A| is the amplitude, B is period, D is the vertical shift (up or down), and C/B is used to find the phase shift.

On comparing (1) and (2), we get

$A=-\frac{1}{2}$

$B=3$

$C=2\pi$

$D=0$

So,

$amplitude=|A|=\frac{1}{2}$

$period=3$

$\text{phase shift}=\frac{2\pi}{3}$

Therefore $amplitude=|A|=\frac{1}{2}$ , $period=3$ and $\text{phase shift}=\frac{2\pi}{3}$ .

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3 years ago

I’ll give points + brainslist, if you don’t know don’t bother answering (:

Damm [24]

C. 35 because c. Is the right answer just trust me ok

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3 years ago

Find f(x) + g(x) when f(x) = 2x^2 + x and g(x) = 3x + 2

Artyom0805 [142]

Answer:

2x^2 + 4x+2

Step-by-step explanation:

f(x) = 2x^2 + x and g(x) = 3x + 2

f(x) + g(x) = 2x^2 + x + 3x + 2

Combine like terms

= 2x^2 + 4x+2

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3 years ago

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Solve 3.8 = 2x - 11.2.<br> X=__

olga55 [171]

Answer:

x= 15/2 im pretty sure

Step-by-step explanation:

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3 years ago

10. The perimeter of a triangle is 48'. The sides are in the ratio of 1 to 2 to 3. Find the three sides.

pentagon [3]

Answer:

Step-by-step explanation:

The sides are in the ratio 1:2:3, so the lengths of the sides are 1x, 2x, 3x.

1x + 2x + 3x = 48'

6x = 48'

x = 8'

The lengths of the sides are 8', 16', 24'

4 0

2 years ago