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Slav-nsk [51]
3 years ago
7

Need help Given u = ⟨root3, -1⟩ and v = ⟨3, –4⟩, what is u · v?

Mathematics
2 answers:
Dominik [7]3 years ago
5 0

Answer:

D

Step-by-step explanation:

Kryger [21]3 years ago
3 0

Answer:

3\sqrt{3} + 4

Step-by-step explanation:

If u = < x₁, y₁ >  and v = <x₂ , y₂ > , then

u • v = x₁x₂ + y₁y₂

Given

u = < \sqrt{3}, - 1 > and v = < 3, - 4 >, then

u • v = 3\sqrt{3} + (- 1)(- 4) = 3\sqrt{3} + 4

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On a winter’s day, 9 degrees Fahrenheit is the highest temperature recorded. Write an inequality that represents the temperature
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Answer: The inequality that represents the temperature t in degrees Fahrenheit at any time on this day is t\leq 9 degree Fahrenheit.

Explanation:

It is given that on a winter’s day, 9 degrees Fahrenheit is the highest temperature recorded. It means the temperature on this day must be less than or equal to 9 degree Fahrenheit.

Let t represents the temperature in degrees Fahrenheit at any time on this day. Then,

t\leq 9

Therefore, the inequality that represents the temperature t in degrees Fahrenheit at any time on this day is t\leq 9 degree Fahrenheit.

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Answer:

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Step-by-step explanation:

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Problem 7-35 A satellite range prediction error has the standard normal distribution with mean 0 NM and standard deviation 1 NM.
hammer [34]

Answer:

Kindly check explanation

Step-by-step explanation:

For a normal distribution with :

Mean(m) = 0

Standard deviation (s) = 1

Calculate :

(a) less than 1.17 NM Probability

Zscore = (x - m) / s = (1.17 - 0) / 1 = 1.17

P(z < 1.17) = 0.879

(b) between 1.04 NM and 1.99 NM Probability

Zscore = (x - m) / s = (1.04 - 0) / 1 = 1.04

P(z < 1.04) = 0.8508

Zscore = (x - m) / s = (1.99 - 0) / 1 = 1.99

P(z < 1.99) = 0.9767

(0.9767 - 0.8508) = 0.1259

(c) greater than 0.93 NM Probability

P(Z > 0.93) = 1 - p(Z < 0.93) = 1 - 0.8238 = 0.1762

(d) between 0.24 NM and 0.73 NM Probability

P(Z < 0.24) = 0.5948

P(Z <0.73) = 0.7673

0.7673 - 0.5948 = 0.1725

(e) less than or equal to 2.3 NM Probability

P(Z ≤ 2.3) = 0.9893

(f) greater than 2.22 NM or less than .65 NM

P(Z > 2.22) = 1 - p(Z < 2.22) = 1 - 0.9868 = 0.0132

P(Z < 0.65) = 0.7422

0.7422 - 0.0132 = 0.729

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P(Z ≥2) = 1 - p(Z ≤ 2)

1 - 0.97725 = 0.02275

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3 years ago
What is the LCM of 20 and 15
ElenaW [278]

Answer:

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<em>60</em>

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