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ch4aika [34]
3 years ago
6

What is the decimal value of the fraction 2/7 ? 0.285714¯ 0.285714¯¯¯¯¯¯¯¯¯¯ 0.2857142857¯¯¯¯¯ 0.285714

Mathematics
2 answers:
Vladimir [108]3 years ago
7 0

Answer:

\over{0.285714}

Step-by-step explanation:

Dividing 2 by 7 in the calculator, we get 0.285714 with this block of numbers repeating.

Leviafan [203]3 years ago
4 0
The decimal of the fraction 2/7 is 0.2857142857
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it is

Step-by-step explanation:

456,602 divided by 5=91,320.4

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Two vectors A⃗ and B⃗ are at right angles to each other. The magnitude of A⃗ is 5.00. What should be the length of B⃗ so that th
creativ13 [48]

Answer:

Length of B is 7.4833

Step-by-step explanation:

The vector sum of A and B vectors in 2D is

C=A+B=(a_1+b_1,a_2+b_2)

And its magnitude is:

C=\sqrt{(a_1+b_1)^2+(a_2+b_2)^2} =9

Where

a_1=Asinx

a_2=Acosx

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b_2=Bcos(x+90)

Using the properties of the sum of two angles in the sin and cosine:

b_1=Bsin(x+90)=B(sinx*cos90+sin90*cosx)=Bcosx

b_2=Bcos(x+90)=B(cosx*cos90-sinx*sin90)=-Bsinx

Sustituying in the magnitud of the sum

C=\sqrt{(Asinx+Bcosx)^2+(Acosx-Bsinx)^2} =9

C=\sqrt{A^2sin^2x+2ABsinxcosx+B^2cos^2x+A^2cos^2x-2ABsinxcosx+B^2sin^2x} =9

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C=\sqrt{A^2+B^2} =9

Solving for B

A^2+B^2 =9^2

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Sustituying the value of the magnitud of A

B^2=81-5^2=81-25=56

B= 7. 4833

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Hey! :)

So when we write something in slope intercept form, all we're doing is solving for y. So let's do that with this equation!

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