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alexdok [17]
3 years ago
5

I don’t understand how to do this?

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
4 0
<span>To solve you need to first find the area of the shaded region and the non shaded region:
non shaded region:Remember the formula for the area of a circle is π.r^2.To find the radius of the small circle look at the square.The square's width is equal to the small circle's diameter.That means the radius is 10/2 which is 5.plug it into the equation and you get π(5)^2 which is 25πThe small circle's area is therefore 25π
Now let us find the area of the shaded region.We do this by finding the area of the big circle and subtract the area of the small circle from it.
Finding the radius of the big circle is a bit more tricky. We need to solve for the hypotenuse of the square.
To make it easier, I'm gonna use the 45-45-90 special triangle method.You can look it up later, but essentially I can figure out that the hypotenuse of square is 10√2.The radius is half of that so; 5√2
Plug it into the equation and you get π(5√2)^2 which is 50π
Now we need to subtract area of small circle from area of big circle. 50π-25π = 25π

That means the shaded portion is 25π.
The area of the small circle is also 25π so both areas equal each other.
</span>
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The equation sin(25o) = 9/C can be used to find the length of line ab . What is the length of line ab?
Sauron [17]
Sin Ф=opposite/ hypotenuse
In this case:
sin 25º=9 in /c
c=9 in/ sin 25º
c≈21.3 in.

Answer: sin (25º), in this case can be used to find the lenght of the hypotenuse, and the length of this hypotenuse would be 21.3 in.

5 0
3 years ago
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Please help the options are left, right, up, down
xz_007 [3.2K]

Answer:

Left, then down.

Step-by-step explanation:

I'm 81% sure

5 0
3 years ago
1 in on the map equals 16 miles, how many in on the map would represent 24 miles ?
Paul [167]
1.5 or 1 1/2 in. On the map equals24 miles
6 0
4 years ago
I needed help solving this
dolphi86 [110]

Answer:

Answer C: m = 26, f = 22

there is a typo in answer D.

Step-by-step explanation:

There are 48 vehicles, so m + f = 48.

They have 140 wheels, so 2m+4f = 140.

You can rewrite the first as m = 48-f and then plug it into the second:

2(48-f) + 4f = 140 =>

96 - 2f + 4f = 140 =>

2f = 140 - 96 =>

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3 0
2 years ago
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Question 9 of 15 (1 point)
mote1985 [20]

The number is -9

Step-by-step explanation:

Let x be the number then according to given statement

4x+10 = x-17

Subtracting 10 from both sides

4x+10-10 = x-17-10\\4x = x-27

Subtracting x from both sides

4x-x = x-x-27\\3x = -27

Dividing both sides by 3

\frac{3x}{3} = \frac{-27}{3}\\ x = -9

<u>Verification:</u>

4(-9)+10 = -9-17\\-36+10=-26\\-26=-26

The number is -9

Keywords: Linear equation, variables

Learn more about linear equation at:

  • brainly.com/question/4767370
  • brainly.com/question/4770453

#learnwithBrainly

7 0
3 years ago
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