Mihai și Teodor au inventat câte o mașină de calcul. Observă operația pe care o face fiecare mașină de calcul și numerele care intră în mașină, apoi descoperă numerele care ies din mașina de calcul. Efectuează calculele pe caiet. 149 dam 43 000 dm 25 km + 128 m … m … m … m 9 hm 1 800 mm 2 dam - 315 dm … dm … dm … dm

it would be 6xy and -16xy.

a and c

step-by-step explanation:

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it