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horsena [70]
3 years ago
15

Determine whether the vectors u and v are parallel, orthogonal, or neither. u = (5,4) v = (-10,9)

Mathematics
2 answers:
dolphi86 [110]3 years ago
7 0

Answer:

A

Step-by-step explanation:

edge answer

12345 [234]3 years ago
6 0

Answer:

Neither

Step-by-step explanation:

5 x -10 = -50

4 x 9 = 36

-50 + 36 = -14 and therefore can not be orthogonal

sqrt(25+16)=sqrt(41)

sqrt(100+81)=sqrt(181)

sqrt(41) x sqrt(181) is not equal to -14 so therefore it is not parallel

So the answer is then neither

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Answer:

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Step-by-step explanation:

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3 years ago
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strojnjashka [21]

Answer:

y intercept = (0, ~-\frac{5}{2} )

x intercept = (-2, ~0)

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Step-by-step explanation:

-5x - 5y = 10

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y intercept

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-5(0) - 4y = 10

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y = \frac{10}{-4}

y = -\frac{5}{2}

so, the answer is (0, ~-\frac{5}{2} )

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x intercept

\to y = 0

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x = \frac{10}{-5}

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so, the answer is (-2, ~0)

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Happy to help :)

8 0
3 years ago
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Prove it disprove: if 2n + 4 is even then n is even.
svetoff [14.1K]

The first claim,

"If 2<em>n</em> + 4 is even, then <em>n</em> is even"

is false; as a counterexample, consider <em>n</em> = 1, which is odd, yet 2•1 + 4 = 6 is even.

The second claim,

"If <em>n</em> is even, then (<em>n</em> + 3)² is odd"

is true. This is because

(<em>n</em> + 3)² = <em>n</em> ² + 6<em>n</em> + 9

<em>n</em> ² + 6<em>n</em> is even because <em>n</em> is even. 9 is odd. The sum of an even and odd integer is odd.

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3 years ago
What is the variance?
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Answer:

Variance is the squared deviation and deviation is the difference of observed value from other values

Step-by-step explanation:

Variance is the squared deviation and deviation is the difference of observed value from other values

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Where, \mu=\text{mean},N=\text{Number of sample space}


8 0
3 years ago
After three years, Elsie’s car had lost 1/3 of its original value. Two years later, it had lost an additional 1/4 of its origina
horrorfan [7]

Answer:

1,500 dollars

Step-by-step explanation:

3,600 - 1/3(3600)=2,400

2,400 -1/4(3600)=$1,500

Hope this helps!

8 0
3 years ago
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