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balu736 [363]
3 years ago
8

This so fking confusing

Mathematics
2 answers:
love history [14]3 years ago
8 0

Answer:

m

Step-by-step explanation:

m

Jet001 [13]3 years ago
4 0
1. 74
2. 18
3. 61
4. 256
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A 4-centimeter rod is attached at one end A to a point on a wheel of radius 2 cm. The other end B is free to move back and forth
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Answer:

Step-by-step explanation:

The triangle that was formed has radius 2:

hypotenuse = 2

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opposite = y = 2*sinθ

from the first picture on the left, we see that the rod has length of 4.

We then use pythagoras theorem with respect to the triangle formed with the rod, i.e, the opposite leg, and the length of the remaining side (say, L), we have:

2²sin²θ +L² = 4²

On rearranging and making L subject of formula, we have

L = √(16 - 4sin²θ)

or

L = 2√(4 - sin²θ)

Also, the distance of point B is from the center of the circle, and it is:

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We know that

3.5 revolutions per second means 3.5(2π) per second.

or

7π radians per second

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θ = 7π*t

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(a)

2cos(7πt) + 2√(4 - sin²(7πt))

at t = 1/21 we substitute for t, and then

2cos(π/3) + 2√(4 - sin²(π/3))

= 1 + √13 or approximately 4.6

(b)

(c)

B = 2cos(7πt) + 2√(4 - sin²(7πt))

dB/dt = - 14πsin(7πt) - { 14π*cos(7πt)sin(7πt)/√(4 - sin²(7πt)) }

4 0
2 years ago
An arithmetic sequence has the following properties:
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Answer:

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Step-by-step explanation:

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Can I get help please?
irina1246 [14]

Answer:

Round to a number that is not a decimal.

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3 years ago
Which shows 2.6x10^4 in standard notation
timofeeve [1]
Hi. The answer is 26000
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