Answer:
Step-by-step explanation:
Find attached the solution
Answer:
5
Step-by-step explanation:
the answer would be 819
Answer:
x = 20
Step-by-step explanation:
x + 3x + 100 = 180
4x + 100 = 180
-100 -100
_________________-
4x = 80
/4 . /4
__________
x = 20
Hope this helps :)
(If you need it explained in words just let me know)
Answer:
3rd option
Step-by-step explanation:
the denominator cannot be zero as this would make the expression undefined.
equating the denominator to zero and solving gives the values that x cannot be.
x² - 7x - 18 = 0 ← in standard form
(x - 9)(x + 2) = 0 ← in factored form
equate each factor to zero and solve for x
x - 9 = 0 ⇒ x = 9
x + 2 = 0 ⇒ x = - 2
then
x = - 2, x = 9 ← are the excluded values