Which of the following expressions represents the verbal description below the square of the sum of 7 times x and 3 divided by 4 times the difference of x and 1

The following expression represents the given verbal description as:  

Step-by-step explanation:

Given the verbal description as:

The square of the sum of 7 times x and 3 divided by 4 times the difference of x and 1.

7 times x means  7x

Sum of 7 times x and 3 means (7x+3)

The square of the sum of 7 times x and 3 means  

The difference of x and 1 means (x-1)

4 times of the difference of  x and 1 is, 4(x-1)

Now, the expressions for the given statement is;  

sine

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