Answer:
To find the circumference, you multiply the radius by 2 and then multiply that by pi (or π). The equation is 2πr
In this case, we already have the radius x 2, which is the diameter. For this circle, the diameter is 12 cm.
The next step is to multiply the diameter, 12 cm, by pi (π is about equal to 3.14)
12 x π ≈ 37.698 cm or 38 cm rounded to the nearest whole number
Answer:
29/30
Step-by-step explanation:
first, we must make sure they have the same denominator!
2/3 x 10/10 = 20/30
3/10 x 3/3 = 9/30
20/30 + 9/30 = 29/30
Answer:
x
Step-by-step explanation:
Using the trigonometric identities
1 + tan²x = sec²x and 1 - sin²x = cos²x
secx =
Given
=
=
= cos²x × cos²x
= x
One integer is 7 more than another. Their product is 198. What are the two integers? Let x be one of the integers. The other integer then is x+7. The product of the two is 198 so: x*(x+7) = 198 x^2 + 7*x -198 = 0 Solve for x (using Quadratic formula?) and then calculate x + 7.
Answer:
21
Step-by-step explanation:
1/7 x 7 = 1
x3 = 3
so 7x3 =21