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3 years ago

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:

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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Evaluate the expression. 23 [ 14 + 4(36 ÷ 12)]

guapka [62]

Answer:

598

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

-5x-4y=10

strojnjashka [21]

Answer:

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

x intercept = $(-2, ~0)$

Step-by-step explanation:

$-5x - 5y = 10$

y intercept

$\to x = 0$

$-5(0) - 4y = 10$

$-4y = 10$

$y = \frac{10}{-4}$

$y = -\frac{5}{2}$

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

x intercept

$\to y = 0$

$-5x - 4(0) = 10$

$-5x = 10$

$x = \frac{10}{-5}$

$x = -2$

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

Happy to help :)

8 0

3 years ago

Read 2 more answers

Prove it disprove: if 2n + 4 is even then n is even.

svetoff [14.1K]

The first claim,

"If 2n + 4 is even, then n is even"

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

The second claim,

"If n is even, then (n + 3)² is odd"

is true. This is because

(n + 3)² = n ² + 6n + 9

n ² + 6n is even because n 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?

kotegsom [21]

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

$variance=\text({standard deviation})^2$

$Variance=\sum\frac{(x-\mu)^2}{N}$

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!

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3 years ago