Answer:
B: 81π inches
Step-by-step explanation:
The formula for the circumference of a circle is C = πd and the formula for the area of a circle is A = πr²
- The formula for the circumference of a circle can also be written as C = 2πr since the diameter is equal to double the radius (d = 2r)
- So we need to solve for r since that is the variable we are missing in order to solve for the area
Plugging in our known values to the circumference formula we have:
- 18π = 2πr
- Then dividing both sides by 2π we have 9 = r
Now that we have solved for the radius, we can plug in this value to the area formula:
Answer:
The answer to your question is z = -3
Step-by-step explanation:
Expand 42 = -7(z - 3)
42 = -7z + 21
Simplify 7z = -42 + 21
7z = -21
Clear z z = 
z = -3
The area is(s^2)/2-(900/5)/2=90
Answer:
5y+3x=4
Step-by-step explanation:
The standard form for the equation of a line is Ax+By=C In this case with the equation 5y-4=-3x B=5 and A=-3 and C=-4 in order to get Ax and By on the same side we can add both -4 and -3x to both sides to get this in the correct form and we get 5y+3x=4
I hope this helps and please don't hesitate to ask if there is anything still unclear!
1,600 seats. because 200 times 8 is 1,600
