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tatuchka [14]
3 years ago
7

Find the radius of a circle with an area of 78.5 cm2?

Mathematics
1 answer:
kipiarov [429]3 years ago
5 0
Formula is Area/ Pie
78.5/3.14 = 25
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What is the slope for 1.(4,9) & (1,6)
Semenov [28]

Step-by-step explanation:

1.(4,9) & (1,6)

m=y²-y¹/x²-x¹

m=6-9/1-4

m=-3/-3

m= 1

2.(5,3) & (5,-9)

m=y²-y¹/x²-x¹

m=(-9)-3/5-5

m=-12/0

3.(2,1) & (8,9)

m=y²-y¹/x²-x¹

m=9-1/8-2

m=8/6

m= 4/3

4.(14,-8) & (7,-6)

m=y²-y¹/x²-x¹

m=(-6)-(-8)/7-14

m=2/-7

m= -2/7

5.(4,-3) & (8,-3)

m=y²-y¹/x²-x¹

m=(-3)-(-3)/8-4

m=0/4

m=0

6.(-11,1) & (-2,6)

m=y²-y¹/x²-x¹

m=6-1/(-2)-(-11)

m=5/9

3 0
2 years ago
N is a positive intiger. Explain why 2n+1 must be an odd number.​
pogonyaev

Answer:

Because the number would be multiplied by an even number, which is 2. If the number (odd or even) is multiplied by two, then the result would be an <em>even number</em>.

Proof:

2(1) = 2

2(6) = 12

2(7) = 14

2(3) = 6

The number would then be added by an odd number, which is 1. If an even number is added with an odd number, then the result would be an odd number.

Proof:

2 + 1 = 3

12 + 1 = 13

14 + 1 = 15

6 + 1 = 7

6 0
3 years ago
6/42 in simplest form
Ganezh [65]

6/42 in simplest form :

Divide both the nominator and the denominator by the HCF (highest common factor) : 6

6/42 = 6:6/42:6 = 1/7

6 0
2 years ago
What is the length of the arc on a circle with radius 20 in. intercepted by a 15° angle?
AnnyKZ [126]
Length of arc  = (15/360) * 2*3.14*20  =   5.23  ins

circumference of the circle = 2*3.14*24 = 150.72

angle at center  from 10 ft arc  = (10/150.72)  * 360  = 23.89 degrees


6 0
3 years ago
Read 2 more answers
Julia is opening a clothing store. She plans to start by selling sweatshirts. if it costs her $9.50 for each sweatshirt, $5 for
Lilit [14]
B is definatly the correct answer, Add all of the prices, and that is what it costs per sweatshirt
7 0
3 years ago
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