What was the original price if: after increasing by 60% it became $8a?

5a

Step-by-step explanation:

We can make a mathematical equation with the information obtained:

final value = initial value * (1 + percentage)

So, if we want to know the inicial value, what we have to do is clear it.

So:

So, in this case:

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

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