You have 40 minutes to exercise at the gym, and you want to burn 300 calories total using both machines. The amount of calories burned on each machine is shown in the picture below. How
much time should you spend on each machine?

Machine a burns 8 calories per minute machine b burns 6 calories per minute.

2nd one in the first row is correct

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