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alexgriva [62]
4 years ago
10

Helppp meeeee!!!! :3333333333

Mathematics
2 answers:
german4 years ago
4 0
Circumference divided by 2 pi
DochEvi [55]4 years ago
3 0

Answer:

r = C ÷ 2π

Step-by-step explanation:

Given

C = 2πr ( isolate r by dividing both sides by 2π )

C ÷ 2π = r

You might be interested in
Evaluate the expression when b=-5 and c=6.<br> 6-3c
Ugo [173]

Answer:

-10

Step-by-step explanation:

  1. 6-3c
  2. 6-3(6)
  3. 6-16
  4. -10
6 0
4 years ago
Use the properties of 30-60-90 and 45-45-90 triangles to solve for x in each of the problems below. Then decode the secret messa
Tcecarenko [31]

The trigonometric function gives the ratio of different sides of a right-angle triangle. The given problems can be solved as given below.

<h3>What are Trigonometric functions?</h3>

The trigonometric function gives the ratio of different sides of a right-angle triangle.

\rm Sin \theta=\dfrac{Perpendicular}{Hypotenuse}\\\\\\Cos \theta=\dfrac{Base}{Hypotenuse}\\\\\\Tan \theta=\dfrac{Perpendicular}{Base}\\\\\\Cosec \theta=\dfrac{Hypotenuse}{Perpendicular}\\\\\\Sec \theta=\dfrac{Hypotenuse}{Base}\\\\\\Cot \theta=\dfrac{Base}{Perpendicular}\\\\\\

where perpendicular is the side of the triangle which is opposite to the angle, and the hypotenuse is the longest side of the triangle which is opposite to the 90° angle.

1st.) x = 5 /Sin(30°)

x = 10

!) sin(45°) = 4/x

x = 4/sin(45°)

x = 4√2

I) Cos(45°) = √3 / x

x = √3 / Cos(45°)

x = √6

E) Tan(60°) = 3√3 / x

x = 3√3 / 3

W) For isosceles right-triangle, the angle made by the legs and the hypotenuse is always 45°.

x = 45°

N) x² + x² = (7√2)²

x = 7

V) Tan(60°) = 7 / x

x = 7√3/3

K) x² + x² = (9)²

x = 9/√2

Y) Sin(60°) = 7√3/x

x = 14

M) Sin(30°) = x/11

x = 11/2

T) Sin(45°) = x/√10

x = √5

A) x + 2x + 90° = 180°

x = 30°

O) Sin(45°) = √2 / x

x = 2

R) Tan(30°) = x / 4

x = 4/√3 = 4√3 / 3

S) Sin(60°) = x / (10/3)

x = 5√3 / 3

Learn more about Trigonometric functions:

brainly.com/question/6904750

#SPJ1

8 0
2 years ago
(2x square + x +1) divided by (x+1)<br> with steps
VashaNatasha [74]

Answer:

2x-1+(2/x+1)

Step-by-step explanation:

Eliminate x+1 from the equation by cancelling it out!

Please mark brainliest and feel free to ask more questions!

Have a great day!

3 0
3 years ago
Read 2 more answers
the hard-cover edition of a book cost 3 times as much as the paperback edition. Both editions together cost $26.60. Find the cos
posledela

Answer:

The Hardcover costs: $19.95 and the Paperback is: $6.65.

Step-by-step explanation:

6.65 * 3 = 19.95

19.95 + 6.65 = 26.60

4 0
3 years ago
A scientist makes an acid solution by adding drops of acid to 1.2 L of water. The final volume of the acid solution is 1.202 L.
laila [671]

Answer:

40 drops

Approximately 0.166 %

Step-by-step explanation:

It would be easier to work the same units for volume

Since there are 1000 ml in a liter

Original water volume 1.2 L = 1.2 x 1000 = 1200 mLl

The final volume of the acid-water solution = 1.202 L = 1202 mL

So total volume of acid added = 1202-1200 = 2 mL

Each drop of acid is 0.05 mL

Number of drops added = 2/.05 = 40 drops

Percent of acid in acid solution = (Volume of acid added)/(Final volume) x 100 = (2/1202) ≈ 0.00166 x 100 ≈ 0.166 %

7 0
2 years ago
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