3.
show that the equation of the tangent line to the circle x^2 + y^2 = r^2 at the point (x1.y1) on the circle is
given by
x1x + y1y = r^2

number one is the correct answer

step-by-step explanation: dogs and cats are mentioned, no other animals

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2

y=-2.5x+12.5

step-by-step explanation:

5y=2x+10

y=0.4x+2

slope=-2.5

5=-2.5*3+b

b=12.5