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notsponge [240]
2 years ago
6

If set A = {1, 2, 3, 4}, how many subsets does A have?

Mathematics
2 answers:
Dmitrij [34]2 years ago
6 0

Answer:

A) 8

Step-by-step explanation:

jasenka [17]2 years ago
3 0

Answer:

I'm pretty sure the answer is A.  Sorry if i'm wrong :3

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Step-by-step explanation:

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3 years ago
Find the angle between the given vectors to the nearest tenth of a degree. u = , v = (2 points)
Liono4ka [1.6K]

Answer:

<h2>3.6°</h2>

Step-by-step explanation:

The question is incomplete. Here is the complete question.

Find the angle between the given vectors to the nearest tenth of a degree.

u = <8, 7>, v = <9, 7>

we will be using the formula below to calculate the angle between the two vectors;

u*v = |u||v| cos \theta

\theta is the angle between the two vectors.

u = 8i + 7j and v = 9i+7j

u*v = (8i + 7j )*(9i + 7j )

u*v = 8(9) + 7(7)

u*v = 72+49

u*v = 121

|u| = √8²+7²

|u| = √64+49

|u| = √113

|v| = √9²+7²

|v| = √81+49

|v| = √130

Substituting the values into the formula;

121= √113*√130 cos θ

cos θ = 121/121.20

cos θ = 0.998

θ = cos⁻¹0.998

θ = 3.6° (to nearest tenth)

Hence, the angle between the given vectors is 3.6°

5 0
3 years ago
[5x+6]*{(3%*5.0x)*5(7*8c)}
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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hope it helps

<h2>stay safe healthy and happy...</h2>
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2 years ago
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