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qwelly [4]
3 years ago
14

I dont know please help ​

Mathematics
1 answer:
Sedaia [141]3 years ago
7 0

Answer:

less than or equal to x

Step-by-step explanation:

For example

[4 ] = 4

[4.3 ] = 4

[- 2 ] = - 2

[- 2.4 ] = - 2

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Pleeeaaseee helllppppp!!!!​
Phoenix [80]

Answer:

sin\theta=\dfrac{1}{2}

=============

<h3>Given</h3>

  • cos \theta=\dfrac{\sqrt{3} }{2}

<h3>To find</h3>

  • The value of sin\theta

<h3>Solution</h3>

Use <u>identity</u> sin^2\theta+cos^2\theta=1 :

  • sin^2\theta=1-cos^2\theta
  • sin^2\theta=1-(\dfrac{\sqrt{3} }{2} )^2
  • sin^2\theta=1-\dfrac{{3} }{4}
  • sin^2\theta=\dfrac{{1} }{4}
  • sin\theta=\sqrt{\dfrac{{1} }{4} }
  • sin\theta={\dfrac{{1} }{2} }
3 0
1 year ago
a door with width 4.20 m has an arc as shown in diagram .Find: a) radius of the arc B) length of the arc to the nearest cm
EastWind [94]

Answer:

Ok, we know that the width of the door is 4.20m.

Then, if the arc is at the top of the door, we will have that the diameter of that "half circle" will be equal to the width of the door.

Then the diameter of the arc is 4.20m

And the radius is defined as half of the diameter, so we have:

radius = 4.20m/2 = 2.10m

And we can write this in cm (because the probelm ask for it)

1m = 100cm

then 2.10m = 2.1*100cm = 210cm

Now, we know that the perimeter of a circle is:

P = 2*pi*r

where pi = 3.14

Then the perimeter (or arc) of half a circle will be half of that:

Arc = (2*pi*r)/2 = pi*r

and r = 210cm, pi = 3.14

Arc = 3.14*210cm = 659.4cm

4 0
3 years ago
Please help I need this done by tomorrow <br><br> Thank you
PtichkaEL [24]

19. C

20. B

21. 200

22. im not sure if im right but i think p+6

23. C

24. Can't see

5 0
3 years ago
Read 2 more answers
0.9y-0.7=4.2 <br> Need help
Darya [45]
Y=5.444….. (repeating 4)
7 0
1 year ago
What is the length of PQ , rounded to the nearest tenth.
Assoli18 [71]

Answer:

10.8 units

Step-by-step explanation:

7 0
2 years ago
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