oliviaabowlinnn oliviaabowlinnn

17-11-2019
Mathematics

contestada

Which of the following is equal to the rational expression when x=-1 or -7? (x+1)(x-1)/(x+7)(x+1) a. x+7/x-1 b. x-1/x+7 c. x+1/x+7

Respuesta :

hephzigirl hephzigirl

19-11-2019

Answer:b

Step-by-step explanation:

(×+1)(×-1)

---------------

(×+1)(×+7)

=cancel (×+1) both the numerator and denominator then you are left with

(×-1)

-------

(×+7)

=(×-1)/(×+7)

Answer Link

Otras preguntas

Preguntas y respuestas que tengan do y does en inglés

En un negocio hay 56 estanterías. En 15 de ellas hay exhibidos 238 productos c/u y en el resto 412 productos c/u. ¿Cuantos productos en total hay en el negocio?

The passage compares Earth to a house. How are they alike?

When interest rates are high, _____. O demand for money increases and money supply decreases O demand for money decreases and money supply decreases O demand fo

Caleb went into a cave. The light intensity (in candela per square meter, or cd/sq. m) as a function of depth inside the cave(in m) is graphed. What is the

Put the events in the order they occurred.

periodic acid hio4 is an important oxidizing agent and a moderately strong acid. In a .10 M solution, [H+] = 3.8 x10^-2 M. Calculate the Ka and pKa for periodic

Listen to each statement describing activities that are about to take place. Then indicate the activity that was likely completed just before each stated activi

Find the area of the given figure. Round to the nearest tenth if necessary

Though many people object to funding the space program when there are humanitarian needs that have to be met on Earth, Jemison points out that such exploration