Answer:

Step-by-step explanation:
In the circumference, 27 represents the diameter, and the radius is <em>half</em><em> </em>the diameter, so take half of it to get 11,5. Then use it in the area formula:

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Answer:
0.6044 = x
Step-by-step explanation:
3ln(2-x)=1
In(2-x)= 1/3
2-x = e ^1/3
2-x = 1.3956
2-1.3956 = x
0.6044 = x
3.75, to do this do 15*.25
Answer: 20
Step-by-step explanation:
f(-4) = -4² - (-4)
f(-4) = 16 + 4
f(-4) = 20
Answer:
<h3>Move all the x terms to one side. Use inverse operations and add 1 5 x 15x 15x to both sides to keep the equation balanced. Solve by working backwards from the order of operations. This means we need to undo the −2 first by adding 2 to both sides of the equation to keep it balanced.</h3>