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Whitepunk [10]
3 years ago
9

X/a+x/b=1make x the subject of the formular​

Mathematics
1 answer:
monitta3 years ago
8 0

Answer:

x = \frac{ab}{b+a}

Step-by-step explanation:

Given

\frac{x}{a} + \frac{x}{b} = 1

Multiply through by ab to clear the fractions

bx + ax = ab ← factor out x from each term on the left side

x(b + a) = ab ← divide both sides by (b + a)

x = \frac{ab}{b+a}

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The position vector for a particle moving on a helix is
topjm [15]

Answer:

a) 25.15

b)

   x = 1

   y = t

   z = (4pi)^2 + t *(8pi) = 4pi(4pi + 2t)

c) (x,y) = (1, -2pi)

Step-by-step explanation:

a)

First lets calculate the velocity, that is, the derivative of c(t) with respect to t:

v(t) = (-sin(t), cos(t), 2t)

The velocity at t0=4pi is:

v(4pi) = (0, 1, 8pi)

And the speed will be:

s(4pi) = √(0^2+1^2+ (8pi)^2) = 25.15

b)

The tangent line to c(t) at t0 = 4pi has the parametric form:

(x,y,z) = c(4pi) + t*v(4pi)

Since

 c(4pi) = (1, 0, (4pi)^2)

The tangent curve has the following components:

x = 1

y = t

z = (4pi)^2 + t *(8pi) = 4pi(4pi + 2t)

c)

The intersection with the xy plane will occurr when z = 0

This happens at:

  t1 = -2pi

Therefore, the intersection will occur at:

(x,y) = (1, -2pi)

6 0
3 years ago
there are 6 girls and 7 boys in a class. a team of 10 players is to be selected from each class. how many different combinations
galben [10]

Answer:

Answer: 286

Step-by-step explanation:

6+7=13

13C10=286  

Answer: 286

5 0
3 years ago
Most of the People in the middle east are Muslim and speak Arabic. Which of the following does this explain?
Alenkinab [10]

a is the answerStep-by-step explanation:

3 0
3 years ago
Read 2 more answers
Your office manager used 45 paperclips for handouts at his presentation from the 450 paperclips available in the stock room. Wha
vova2212 [387]
It would be 90%..... 45/450= 10%.... so there would be 90% not being used.
5 0
3 years ago
What is 4 plus 4 hehe
Lynna [10]

Answer:

(plus = +)

<h2>4 + 4 = 8</h2>

-,-

Step-by-step explanation:

<h2>Hope it helps! </h2>
4 0
3 years ago
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