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ziro4ka [17]
3 years ago
11

X is a normally distributed random variable with mean equal to 1.234 and variance equal to .336. what is the probability that x

equals 1.000?
Mathematics
1 answer:
cricket20 [7]3 years ago
8 0
38 because the x is normal
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mars1129 [50]

y=mx+b

m is your slope

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3 years ago
What is the equation of the sinusoid shown in the graph?
ololo11 [35]

Answer:

<em>Answer: C</em>

Step-by-step explanation:

<u>The Cosine Function</u>

The graph of a cosine function is a sinusoid that starts at its maximum value of 1 at x=0 and takes x=2π radians to complete a full cycle. The function of the parent cosine function is:

y=\cos x

Both the amplitude A and the angular frequency w of a cosine can be modeled by the function

y=A\cos(\omega x)

The graph of the cosine function shown in the figure has an amplitude of A=3 and it completes a full cycle at x=π/2, thus:

\frac{\pi}{2}\omega =2\pi

Thus:

\omega = 4

Therefore, the equation of the sinusoid is:

y=3\cos (4x)

Answer: C

3 0
3 years ago
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I speak without a mouth and hear without ears. I have no body, but I come alive with wind. What am I?
Genrish500 [490]

Answer:

Step-by-step explanation:

5 0
3 years ago
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Multiply the polynomials (a2 + 3a – 7) and (2a2 – a + 4). Simplify the answer.
Alex_Xolod [135]
Answer correct or incorrect

8 0
3 years ago
Pls help me I rlly don’t get it :(
zhenek [66]

Step-by-step explanation:

Use SOH-CAH-TOA.

Sine = Opposite / Hypotenuse

Cosine = Adjacent / Hypotenuse

Tangent = Opposite / Adjacent

Let's start with #12.  The hypotenuse is 18.  The side adjacent to ∠B is 6.  Since we have the adjacent side and hypotenuse, we should use cosine.

cos B = 6/18

Solving for B:

B = cos⁻¹(6/18)

Using a calculator:

B ≈ 70.5°

Now let's do #14.  The side adjacent to ∠B is 19, and the side opposite of ∠B is 22.  Since we have the adjacent side and opposite side, we should use tangent.

tan B = 22/19

Solving for B:

B = tan⁻¹(22/19)

Using a calculator:

B ≈ 49.2°

8 0
3 years ago
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