Let <em>x</em> be the number of one-striped fish and <em>y</em> the number of two-striped fish.
100 families each have 2 fish, so there are a total of 200 fish:
<em>x</em> + <em>y</em> = 200
<em>x</em> one-striped fish carry a total of <em>x</em> stripes, while <em>y</em> two-striped fish carry a total of 2<em>y</em> stripes. There are 273 stripes overall, so
<em>x</em> + 2<em>y</em> = 273
Solve for <em>x</em> and <em>y</em>. Subtracting the first equation from the second eliminates <em>x</em> :
(<em>x</em> + 2<em>y</em>) - (<em>x</em> + <em>y</em>) = 273 - 200 ==> <em>y</em> = 73
Then
<em>x</em> + 73 = 200 ==> <em>x</em> = 127
C, 9 because the scale factor is 1.5 so 6x1.5
Answer:
(x+6)² + (y-6)² = 181
Step-by-step explanation:
equation of the circle in general is (x - a)² + (y - b)² = r²
center is (a, b) in our task a=-6 b=6
so equation of the circle is (x+6)² + (y-6)² = r²
we have point (3,-4) ⇒ x=3 y=-4
put x y in equation of the circle ⇒ (3+6)² + (-4-6)² = r² ⇒r² =181
⇒The equation of a circle is (x+6)² + (y-6)² = 181
Answer:
you got this bro
Step-by-step explanation:
stay calm and dont over think about it you are smart just take your time
