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FinnZ [79.3K]
3 years ago
11

I need help to solve this

Mathematics
2 answers:
mash [69]3 years ago
5 0
I believe the answer is C but i am not sure
ludmilkaskok [199]3 years ago
5 0
The answer is C. 855-750 is 105, and that number divided by 15 is 7, which is how long the sand was falling
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A 72° sector in a circle has an area of 16.4π yd². What is the area of the circle? Use 3.14 for pi.
Dmitry [639]
The area of a sector of a circles is calculated by the equation A = πr^2 (theta/360). From the data of the sector, we determine the radius of the circle. THen, we can calculate for the area of the circle.

16.4π = πr^2 (72/360)
r = 9.06

Area of circle = πr^2 
Area of circle = π(9.06)^2
Area of circle = 82π
6 0
3 years ago
If 1+9+8=1 then 2+8+9=x
Gwar [14]
Assuming this is some kind of modular question, maybe mod 17.

since 1+8+9=1, we can say that 8+9=0
therefore, 2+0=x, so x=2
6 0
3 years ago
True or False? A secant is a line or segment that passes through a point on the circle and the center of the circle.
Musya8 [376]
Thr answer is False
That line is called diameter
6 0
3 years ago
Read 2 more answers
What is 9 copies of 3.65
Nataly_w [17]
I believe that you are doing multiplication with this.

So…    9 x 3.65 = 32.85

Hope this helps. :)
3 0
3 years ago
I would like you to help me with that since I do not understand very well please ​
JulijaS [17]

When you see the symbol "△", this denotes a triangle. Now combine the symbol with the letters FGH, this becomes △FGH, meaning a triangle FGH, with F, G, and H as the three points.

Now, the symbol "∠" means angle and "m∠" means the measure of an angle. So m∠F means the angle at the point F, m∠G means the angle at the point G, and m∠H means the angle at the point H. (I'll attach a diagram of this triangle).

Now we have to determine m∠H, which is the angle at point H. To do that, we have to find the value of x. To do that, we have to use one of the laws of a triangle, which is:

The sum of angles in a triangle = 180°. This means when we add all the angles in a triangle, it sums up to 180°. Let's do that.

\angle F + \angle G + \angle H = 180\textdegree \\\angle F = (5x - 6)\textdegree, \angle G = (3x + 16)\textdegree, \angle H = (x + 8)\textdegree \\(5x - 6) + (3x + 16) + (x + 8) = 180\\5x + 3x + x - 6 + 16 + 8 = 180\\9x + 18 = 180\\9x = 180 - 18\\9x = 162\\x = 18\textdegree

Now that we have found the value of x as 18°, we can substitute its value to determine the angle H.

m\angle H = (x + 8), x = 18\\m\angle H = 18 + 8\\m\angle H = 26\textdegree

I hope you understand the explanation.

8 0
2 years ago
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