Answer:
P(seventh grade winner) = 3/8
Step-by-step explanation:
Let present ages of father be x and of son is y years
x/y = 7/2, 2x=7y, y=2x/7
(y+5)=37/100*(x+5)
(2x/7+5)=37/100*(x+5)
(2x+35)/7=(37x+185)/100
200x+3500=259x+1295
259x-250x=3500-1295
59x=2205
x=37.37 years
Answer:
See below.
Step-by-step explanation:
Using the right triangle altitude theorem, the correct proportions are:





AC = 20 cm





CB = 15 cm
(5ab-7a-9) - (8ab-2)
5ab - 7a - 9 - 8ab + 2
-3ab -7a -7
The general form of the equation of a circle with radius ' r '
and centered at (a, b) is
(x - a)² + (y - b)² = r²
I'm pretty sure that your circle is not "at (-2,1)".
I'm going to approach your question assuming that
the circle's center is there.
Since the circle's center is at (-2, 1), the left side of its equation is
(x + 2)² + (y - 1)² = .
The distance from the center to (-4, 1) is the circle's radius.
That distance is 2, so the right side of the equation is
4 .