Question

Треба 3-5!

СРОЧНООООО!!

Answer 1

3. (x - (-5)) + (y - 2) = 15^2;

(x + 5) + (y - 2) = 225;

4. x(H) = (x(A) + x(B)) / 2 = (-2 + 3) / 2 = 1 / 2 = 0.5;

y(H) = (y(A) + y(B)) / 2 = (4 + 0) / 2 = 4 / 2 = 2;

H(0.5; 2).

5. |a| = $\sqrt{4^2 + (-5)^2} = \sqrt{16 + 25} = \sqrt{41}$;

|b| = $\sqrt{7^2 + (-2)^2} = \sqrt{49 + 4} = \sqrt{53}$;

12a - 15b = 12 * |a| - 15 * |b| = 12$\sqrt{41\\}$ - 15$\sqrt{53$;