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Westkost [7]
3 years ago
5

Help me please I need this done by tomorrow!!!!

Mathematics
1 answer:
Reptile [31]3 years ago
3 0
12) 12, 8

12 - 8 = 4

12 + 8 = 20

Answer: 4 < x <span>< 20

13) 11, 3

11 - 3 = 8

11 + 3 = 14

Answer: 8 </span>< x <span>< 14

Hope this helps :)</span>
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Need help step by step plz
yulyashka [42]

I'm assuming D is the center of the circle.  See the new figure.

Angle BDC = 106 degrees, that's the definition of arc measure.

Triangle BDC is isosceles (two radii make congruent sides) so the two remaining angles in BDC are equal, DBC=DCB=(180-106)/2=37 degrees.

Angle BAC = 106/2 = 53 degrees, subtending the arc of 106 degrees.

Angle CAD = 53/2 = 26.5 degrees because AD is a bisector, the shared hypotenuse of congruent right triangles AED and AFD.

AFD is also congruent to CFD, so angle DCA is also 26.5 degrees

Angle ACB is the sum of DCA and DCB, ACB = 26.5 + 37 = 63.5 degrees

The angle subtends the arc we seek, whose measure must be double:

10x - 23 = 2(63.5) = 127 degrees

10x = 150

x = 15

Answer: 15

8 0
3 years ago
corey has 42 feet of fencing around his garden. The garden is rectangular in shape, and its length is equal to twice the width m
Elza [17]
W= width
l= length

2w+2l=42
l=2w-3

w= 8
l= 13
4 0
3 years ago
A rectangle is 25 in. long and 13 in. wide.<br><br><br><br> What is the area of the rectangle?
sineoko [7]

area = I x w

so 25 x 13 = 325 square inches

4 0
3 years ago
Read 2 more answers
Samantha is trying to complete the Free Throw wellness challenge. In order to earn her chip, she needs to hit 16 out of 20 free
castortr0y [4]

Answer:

83%

Step-by-step explanation:

12 + 13 + 15 = 40

16 x 4 = 64

16 x 3 = 48

40/48 = 0.833333333333

3 0
3 years ago
the surface area of a sphere is 1,017.36 square inches.what is the volume of the sphere? use 3.14 for pi
emmasim [6.3K]

Answer:

<em>Area = 254.34 inches ³</em>

Step-by-step explanation:

The formula to find the surface area of a sphere is:

SA = 4\pi r^{2}

To find the volume of the sphere, we first need to figure out the radius (r) of the sphere. We can accomplish this by reversing the formula that was used to find the surface area. (1017.36 in^{2})

SA = 4\pi r^{2}

1017.36 = 4\pi r^{2}

Divide both sides by pi (3.14).

1017.36 = 4\pi r^{2}

324 = 4 r^{2}

Divide both sides by 4.

324 = 4 r^{2}

81 = r^{2}\\

Find the square root of both sides.

81 = r^{2}\\

\sqrt{81} = r

<em>radius = 9</em>

<em />

Insert the value of the radius into the formula for finding the volume of a sphere. (A=\pi r^{2})

(A=\pi r^{2})

A=\pi (9)^{2}

A=\pi (81)

A = 254.34

<em>Area = 254.34 inches ³</em>

<em />

~Hope this helps!~

4 0
3 years ago
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