Answer:
A = -9, B = 65
Step-by-step explanation:
Take the square root of both sides of the equation:
h + 9 = ±√65
Subtract 9 from both sides of the equation:
h = -9 ± √65
Comparing this to the form
h = A ± √B
we see that A = -9 and B = 65.
_____
A lot of math is about matching patterns of numbers and variables. Here, you're asked to match the expression -9±√65 to the pattern A±√B and identify the values for A and B that make these expressions identical.
It should not be difficult to see that the stuff on the left side of ± is the value of A. That stuff is -9.
The stuff under the radical is the value of B. That stuff is 65.
Answer:
The price of 1 marker is $3
Step-by-step explanation:
15/5 = 3
Answer:
y = 11.
Step-by-step explanation:
y = kx is direct variation, where k is a constant.
When x = 24 y = 8 so we have
8 = k*24
k = 8/24 = 1/3.
So the relation is y = (1/3) k.
When x = 33,
y = (1/3)*33
So y = 11.
Step-by-step explanation:
This is the equation of the ellipse. Since the denominator is greater for the y values, we have a vertical ellipse. Remember a>b, so a
The formula for the foci of the vertical ellipse is
(h,k+c) and (h,k-c).
where c is
Our center (h,k) is (2, -5)
Here a^2 is 9, b^2 is 4.
So our foci is
and
Answer:-7x-6y=-1 = - 7/6+1/6
Step-by-step explanation:
