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3 years ago

Find the angle 0 between the vectors. u=(1, 1, 1, 0), v = (4, 4, 4, 4).

Mathematics

1 answer:

Naya [18.7K]3 years ago

6 0

Answer:

30 degrees

Step-by-step explanation:

u dot v=1*4+1*4+1*4+0*4=4+4+4+0=12

|u|=sqrt(1^2+1^2+1^2+0^2)=sqrt(3)

|v|=sqrt(4^2+4^2+4^2+4^2)=sqrt(4*4^2)=2*4=8

cos(theta)=u dot v/(|u||v|)

cos(theta)=12/(sqrt(3)*8)

cos(theta)=3/(sqrt(3)*2)

cos(theta)=sqrt(3)/2

theta=30 degrees

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Tema [17]

The answer is A. 14h + 11d

because if you 3d and 8d it will give you 11d

the take 24h and subtract to 10h it will give you 14h

so when you write it you answer is 14h + 11d

Hope this helps! :)

~Shadow

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3 years ago

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On a 20 sided dice what is the probability that a 11 was rolled?

Sedbober [7]

Given:

A 20 sided dice is rolled.

To find:

The probability of getting 11.

Solution:

A 20 sided dice is rolled.

On a 20 sided dice, the possible outputs are 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20.

Total number of outcomes = 20

Favorable outcomes or number of 11 = 1

Now,

$\text{Probability of getting 11}=\dfrac{\text{Favorable outcomes}}{\text{Total number of outcomes}}$

$\text{Probability of getting 11}=\dfrac{1}{20}$

$\text{Probability of getting 11}=0.05$

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2 years ago

Combine like terms to create an equivalent expression 3x²+5y²-x^2+2y^2-4

Alja [10]

Answer

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2 years ago

Need help dont know how to round round this number to the nearest thousand? 0.7966347977

tatyana61 [14]

Answer:

.797

Step-by-step explanation:

If your talking about a decimal number, you would say the thousandth. I know, weird, but don't blame me.

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Ex: 1.3483838383

Since 8 is greater than 5, we could get rid of all the 83s and just round up to 1.35.

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3 years ago

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Maya had $27. She spent all the money on buying 3 burgers for $x each and 2 sandwiches for $y each. If Maya would have bought 2

defon

Answer:

Option C

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