Answer:
1.80
Step-by-step explanation:
it very useful to understand very well
Step-by-step explanation:
y = x² - 6x + k = (x + a)² = x² + 2ax + a², where a is a real constant.
By Comparing Coefficients, we have
2a = -6 and a² = k.
=> a = -6/2 = -3,
=> k = (-3)² = 9.
Hence the value of k must be 9.
Answer:
7 hours
Step-by-step explanation:
$247.50 - $45.00 (how much he charges for the first hour) = $202.50
$202.50 ÷ $33.75 (how much he charges for the additional hours) = 6 hours
But he charges 45 dollars for the first hour so he 7 hours in total
Answer: Just apply the formula
Step-by-step explanation:
The equation for volume of a cone is:
The radius is the line that creates a 90 degree angle with the height
The height goes from the base to the tip of the cone.
I recommend leaving Pi as it is and plugging the rest of the numbers first.
Then at the end multiply by 3.14 and round at the end.
This way, it is easier to avoid calculation errors.