Answer:
Step-by-step explanation:
Exact Form:
x
=
15
/8
x=1.875
The standard form equation for a circle is

where (h, k) is the center and r is the radius.
The standard form equation for an ellipse is

(center h, k and major and minor axes a and b)
This equation is standard form for neither, but might be general form for one.
Answer:
x=0, y=-2
Step-by-step explanation:
Because 9y appears twice in both equations, you can subtract the equations to eliminate the y variable so you can solve for x:
-7x + 9y = -18
-(4x + 9y = -18)
__________
-11x = 0
x = 0
Since we know x=0, then we plug it back into one of the equations to get the value of y:
-7x + 9y = -18
-7(0) + 9y = -18
0 + 9y = -18
9y = -18
y = -2
Therefore, x=0, and y=-2
Answer:
9√2
Step-by-step explanation:
simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.
Exact form:9√2
Decimal form: 12.72792206
11 / 12 - 8 / 12 = 3 / 12 = 1/4 square meters;