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3 years ago

12

Let u = <-9, 4>, v = <8, -5>. Find u - v.

2 answers:

Nataliya [291]3 years ago

6 0

Answer: $u-v=$

Step-by-step explanation:

In order to subtract two vectors:

$u=$ and $v=$

It is necessary to subtract the corresponding components:

$u-v=$

Then, given the vectors:

$u =$ and $v =$

We know that $u-v$ is:

$u-v=$

$u-v=$

Deffense [45]3 years ago

3 0

Answer:

-17

Step-by-step explanation:

-9-8

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38. By the commutative property, 3(w +9) is

taurus [48]

Answer:

B

Step-by-step explanation:

3 ( w + 9 )

3 × w + 3 × 9

<u><em>3w + 27</em></u>

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3 years ago

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A hotel patron starts at the fifth floor and goes up seven floors to meet a friend. How many levels, and in which direction, mus

Sonbull [250]

Answer:

they must go 12 floors downwards because parking A has to be on the last floor

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3 years ago

This problem really confuses me, help?

OLga [1]

So k in the first problem would =1/2
and i guess in the second problem just put k in place of the first space and in the second space put 8 for x. y would then =4. Idk if I did this right, though, I'm honestly a little confused too.

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4 years ago

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Which of the following is a factor of 7x2 - 12x - 4? (6 points)

grin007 [14]

Answer:

We conclude that 'None of the above' is the correct answer.

Step-by-step explanation:

Given the expression

$7x^2\:-\:12x\:-\:4$

Breaking the expression into groups

$7x^2\:-\:12x\:-\:4=\left(7x^2+2x\right)+\left(-14x-4\right)$

Factor out $x$ from $7x^2\:+\:2x$

$=x\left(7x+2\right)$

Factor out -2 from $\left(-14x-4\right)$

$=-2\left(7x+2\right)$

so the expression becomes

$7x^2\:-\:12x\:-\:4=\left(7x^2+2x\right)+\left(-14x-4\right)$

$=x\left(7x+2\right)-2\left(7x+2\right)$

Factor out the common term $7x+2$

$=\left(7x+2\right)\left(x-2\right)$

Therefore, from the given options, we conclude that 'None of the above' is the correct answer.

4 0

3 years ago

Find the tangent of each angle that is not the right angle. Drag and drop the numbers into the boxes to show the tangent of each

omeli [17]

Answer:

tan D = $\frac{6}{11}$ or 0.545

tan F = $\frac{11}{6}$ or 1.833

Step-by-step explanation:

To find tangent is always $\frac{opposite}{adjacent}$

so the opposite of angle D is line EF which is 4.8 and the adjacent side is line ED which is 8.8 so $\frac{4.8}{8.8}$ which is $\frac{6}{11}$ or 0.545

The opposite of angle f is line ED which is 8.8 and the adjacent is line EF which is 4.8 so $\frac{8.8}{4.8}$ is $\frac{11}{6}$ or 1.833

3 0

4 years ago