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andrezito [222]
3 years ago
9

Point c is located in which quadrant?​

Mathematics
2 answers:
Murrr4er [49]3 years ago
7 0

Answer 4

Step-by-step explanation:

Top right 1

Top left 2

Bottom left 3

bottom right 4

vlada-n [284]3 years ago
4 0

Answer:

IV.

Step-by-step explanation:

You need to know that for the x-axis, right means positive values and left means negative values. In this case, C is on the right side of the x-axis, then has a positive x value.

For the y-axis up means positive values and down means negative values. In this case, C is down, so C has a negative y-value.

Now,

I quadrant is x and y positive.

II quadrant is x negative and y positive.

III quadrant is x and y negative.

IV quadrant is x positive and y negative.

Then as C has x positive and y negative, C is in IV quadrant.

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You bicycle along a straight flat road with a safety light attached to one foot. Your bike moves at a speed of 15 km/hr and your
Viefleur [7K]

Answer:

a)

x(t) = ( 4.167 t + 0.2 cos (2πt))

y(t) = ( 0.3 - 0.2 sin  (2πt))

b) the  foot have to be 3.32 rev/sec faster

Step-by-step explanation:

Given that:

the speed of the bike = 15 km/hr = 15 × 1000/3600 (m/sec) = 4.167 m/sec

radius of the circle when the foot moves = 20 cm = 0.2 m

radius of the circle above the ground = 30 cm = 0.3 m

Let assume that:

x(t)  should represent the vector along the horizontal moment

y(t) should be the vector along the vertical moment

The initial component will be ( 0, 0.3)

We know that the radius of the circle is given as 0.2 m, So the vector of the circle can be written as (0.2 cos t , 0.2 sin t )

Also, the foot makes one revolution in a second, definitely the frequency of the revolution = 1 and the vector for the circle is ( 0.2 cos (2πt), -0.2 sin  (2πt)), due to the fact that the foot moves clockwise.

Thus, adding all the component together ; we have:

(x(t), y(t)) = (0,0.3)+(4.167 t , 0)+(0.2 cos (2πt), -0.2 sin  (2πt))

(x(t), y(t)) = (4.167 t + 0.2 cos (2πt), 0.3 - 0.2 sin  (2πt))

Hence; the parametric equations are:

x(t) = ( 4.167 t + 0.2 cos (2πt))

y(t) = ( 0.3 - 0.2 sin  (2πt))

b)

The linear speed of rotation is :

15km/hr = 15 × 100, 000/3600 (cm/sec)

             = 416.7 cm/sec

The rotational frequency is :

= 416.7/2πr

= 416.7/2(3.14 × 20)

= 3.32 rev/sec

Hence, the  foot have to be 3.32 rev/sec faster in rotating if an observer standing at the side of the road sees the light moving backward.

4 0
3 years ago
Read 2 more answers
A circle has a diameter of 10 centimeters. of a sector with a central angle of 50 degrees is cut out, what is the area of this s
kramer

Answer:

D. 10.91 square centimeters

Step-by-step explanation:

Area of a sector of a circle = \frac{\theta}{360}\\ \pir^{2}

where \theta = 50^{o} C

radius (r) = half of diameter = 10/2 = 5 cm

Area  = \frac{50}{360} * \frac{22}{7} * 5^{2}

= 10.91 cm^{2}

8 0
3 years ago
What expression is equivalent to -3z-z
NeX [460]

Answer:

-4z

Step-by-step explanation:

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Determine the next three terms in the following sequence:<br><br> 1, 2, 5, 10, ____, ____, ____,...
goblinko [34]

Add all of the numbers by using an odd number.

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5+5=10

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Answer:1 , 2, 5, 10, 17, 26, 37

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6. Which of the following is a continuous random variable:
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Answer:

T

Step-by-step explanation:

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