Answer:
B
Step-by-step explanation:
Given
4x² - 72x = 0 ← factor out 4 from each term
4(x² - 18x) = 0
To complete the square
add/subtract (half the coefficient of the x- term)² to x² - 18x
4(x² + 2(- 9)x + 81 - 81) = 0
4(x - 9)² - 4(81) = 0
4(x - 9)² - 324 = 0 ( add 324 to both sides )
4(x - 9)² = 324 ( divide both sides by 4 )
(x - 9)² = 81 ( take the square root of both sides )
x - 9 = ± 
= ± 9 ( add 9 to both sides )
x = 9 ± 9
Then
x = 9 - 9 = 0
x = 9 + 9 = 18
The answer is 17 yards.
So, the drawn length (l1) is 1/4 yard:
l1 = 1/4 yards
The actual fountain's length (l2) is 68 times l1:
l2 = 68 * l1
l2 = 68 * 1/4 yards
l2 = 17 yards
approximatly 223.25 cubic inches
Volume of a sphere = (4/3)*pi*r squared
(4/3)*(3.142)*(53.29)
223.25 cubic inches
The probability that he is in the right job is 0.65, so the probability he is in the wrong job is 0.35, and similarly, the probability that the test is inaccurate is 0.3. Thus, the probability that someone is in the right job and the test is then wrong is 0.65*0.3=.195, and the probability that someone is in the wrong job and the test is wrong is 0.35*.3=.105.
Answer:
311 
Step-by-step explanation:
Taking a pizza to be a circle
Area of big pizza be x abd are of small pizza be y
hence difference = x-y
Area of a circle = 
where r is the radius
taking 
to be 3.14
hence area x = 3.14 (
*) = 1017.36
Area y = 3.14 (
* )= 706.5
x-y = 1017.36- 706.5 =310.86
310.86
