A. Is 6x+9x and 15x
B. Is 4 times 1 plus 4 times 9y and 4+36y
The radius of circle is r = 6 cm.
The formula for the circumference of circle is,

For exact circumference take pi = 3.14.
Substitute 6 for r in the formula to determine the circumference of circle.

So exact circumference of circle is 37.68 or 12 pi .
Answer:
6
Step-by-step explanation:
4n - 12 < 2n + 2 is for n=6
4×6 -12 < 2×6 +2
24 - 12 < 12 + 2
12 < 14 correct
for n=7
4×7 - 12 < 2×7 + 2
16 < 16 incorrect
for n=8
4×8 - 12 < 2×8 + 2
20 < 18 incorrect
for n=9
4×9 - 12 < 2×9 + 2
24 < 20 incorrect
so, only for n=6 is the expression true.
Yes, it is possible even if it is a decimal.
Answer and Step-by-step explanation:
For this triangle, to find x, we will use the cosine trigonometric function.
cosine functions look like this:

(The weird looking symbol is called theta, and represents an angle measurement)
Plug in the values into the equation.
cos(42) = 
Multiply both sides by 15.
15(cos(42)) = x
Plug into a calculator.
<em><u>11.1472 is the answer.</u></em>
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