4 years ago

Where can I learn a lot about statistics?

Mathematics

1 answer:

meriva4 years ago

5 0

Google will teach you

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Question 1. Determine whether the vectors u and v are parallel, orthogonal, or neither. u = <10, 6>, v = <9, 5>? Que

kupik [55]

Angle between two vectors = arc cos [(u.v)/(abs(u) x abs (v))]
u.v = (10 x 9) + (6 x 5) = 90 + 30 = 120
abs (u) = $\sqrt{ 10^{2}+ 6^{2}} = \sqrt{100+36} = \sqrt{136} =11.66$
abs (v) = $\sqrt{ 9^{2}+ 5^{2}} = \sqrt{81+25} = \sqrt{106} =10.30$
Angle between the two vectors = arc cos [120 / (11.66 x 10.30)] = arc cos [120 / 120.1] = arc cos [1] = 0
Since the angle between the two vectors is 0,
therefore, the angles are parallel

5 0

3 years ago

Please help me I need this asap

just olya [345]

Answer:

C=5

Step-by-step explanation:

just gotta distribute. hope this helps:)

4 0

2 years ago

How do I solve: x^2+3=84.

balandron [24]

Answer:

x=9, x=-9

Step-by-step explanation:

subtract 3 from both sides

x^2=81

then squareroot both sides (remember that there is a positive and negative solution!)

x=9, x=-9

7 0

2 years ago

Read 2 more answers

How do you find the circumference of a circle with a radius of 4?

goldenfox [79]

Circumference of a circle = 2πr
C = 2π(4)
C = 8π
C = 8 * 3.14 = 25.12

In short, Your Answer would be 25.12

Hope this helps!

6 0

3 years ago

Is 5.26 a rational or irrational number

kolbaska11 [484]

5.26 is equivalent to 526/1000, which is the ratio of two integers. 526/1000 can, in turn, be reduced to 263/500, which is the same (ratio). Thus, 5.26 is rational.

7 0

4 years ago