What are the solutions to the equation x- 7/x = 6 ?
A) x=-7 and x = 1
B) x=-6 and x = -1
C) x= -1 and x = 7
D) x= 1 and x = 6

none of these.

Try to substitute any of the given values for x and the result is false

Step-by-step explanation:

Try x=1. 1-7 -6. Divide that by 1 and you get -6 = 6. False!

To solve the given equation, multiply sides by x to cancel the denominator. You get x-7 = 6x then subtract x from both sides to get -7=5x. Divide both sides by 5 to get x= -7/5

But if the original equation has an x^2 somewhere, there will be a different set of solutions.

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.