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3 years ago

How do I solve this?

Mathematics

1 answer:

Rashid [163]3 years ago

3 0

Answer:

"If Kendrick is excited, then music class is next."

Step-by-step explanation:

The conditional would be "not." If it is not, he is not. "If music class is next, then Kendrick is exited" could be correct if the grammar was too. You do not know if music class is next so they couldn't be excited. However, if he is excited, then music class has to be next.

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find the angle between the vectors. (first find the exact expression and then approximate to the nearest degree. ) a=[1,2,-2]. B

SashulF [63]

Answer:

$\theta = cos^{-1} (\frac{10}{\sqrt{9} \sqrt{25}})=cos^{-1} (\frac{10}{15}) = cos^{-1} (\frac{2}{3}) = 48.190$

Since the angle between the two vectors is not 180 or 0 degrees we can conclude that are not parallel

And the anfle is approximately $\theta \approx 48$

Step-by-step explanation:

For this case first we need to calculate the dot product of the vectors, and after this if the dot product is not equal to 0 we can calculate the angle between the two vectors in order to see if there are parallel or not.

a=[1,2,-2], b=[4,0,-3,]

The dot product on this case is:

$a b= (1)*(4) + (2)*(0)+ (-2)*(-3)=10$

Since the dot product is not equal to zero then the two vectors are not orthogonal.

Now we can calculate the magnitude of each vector like this:

$|a|= \sqrt{(1)^2 +(2)^2 +(-2)^2}=\sqrt{9} =3$

$|b| =\sqrt{(4)^2 +(0)^2 +(-3)^2}=\sqrt{25}= 5$

And finally we can calculate the angle between the vectors like this:

$cos \theta = \frac{ab}{|a| |b|}$

And the angle is given by:

$\theta = cos^{-1} (\frac{ab}{|a| |b|})$

If we replace we got:

$\theta = cos^{-1} (\frac{10}{\sqrt{9} \sqrt{25}})=cos^{-1} (\frac{10}{15}) = cos^{-1} (\frac{2}{3}) = 48.190$

Since the angle between the two vectors is not 180 or 0 degrees we can conclude that are not parallel

And the anfle is approximately $\theta \approx 48$

3 0

2 years ago

Solve 2/3x> 8 or 2/3x< 4

grigory [225]

Answer:

x > 12

Answer for 2/3>8

8 0

2 years ago

Read 2 more answers

!!!!PLEASE HELP, WILL GIVE BRIANLIEST!!!!

sattari [20]

Hello!

The rotation creates a bowl or known as a paraboloid

The answer is the third one

Hope this helps!

8 0

3 years ago

Al can wash a car in 60 minutes, and bill can wash a car in 30 minutes. cathy can wash a car in 20 minutes. how long, in minutes

choli [55]

B) 36

To figure this out you need to average the numbers. To average them you add them all up and divide by how many are there.
(60+30+20)/3
(90+20)/3
110/3
36

3 0

3 years ago

Write a single translation that is equivalent to T

andre [41]

I'm not positive what this is, but I think you want:

<span>T (2-5),(-1+5) = T -3,4

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!</span>

5 0

3 years ago