During his vacation, Dalyn rents a small boat from a rental service that charges a flat fee of $50 plus $20 per hour (including taxes). The total charge comes to $150, which equation can be used to calculate the number of hours, X, that Dalyn rents the boat?
A 20x + 50 = 150:5 hours
B20(x + 50) = 150.5 hours
C 50x + 20 = 150:4 hours
D 30(X + 10) = 90.4 hours

Step-by-step explanation:

the initial Equation :

50 + 20X = 150

it could be changed to :

20X + 50 = 150

=>

20X = 150-50

20X = 100

x = 100/20

x = 5 hours

the correct answer is option A

19.

step-by-step explanation:

you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19

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