lindseylewis313 lindseylewis313

20-09-2020
Mathematics

contestada

If 2 - 4x = 18, evaluate x^2+ 2x – 1.

Respuesta :

christineangeline christineangeline

20-09-2020

Answer:

7

Step-by-step explanation:

2 - 4x = 18

-4x = 18 - 2

-4x = 16

4x = - 16

x = -16/ 4

x= -4

substitute x=4 ,

x ^ 2 + 2x -1

-4^2 + 2×-4 - 1

16 - 8 - 1

7

Answer Link

Otras preguntas

what are three ways in which electric current help you do work in describe energy transformation that takes place

What is the sum of three fours and four threes

What were the causes if instability in the West after World War 1

How is a cell like a house?

In the year 1900, in the country Acirema, there were 100 Lawyers and 2 million people. Every 10 years, the number of Lawyers doubles, and the population increa

An RNA sequence is shown below. AUGCCGAAACGU Which of the following statements describes how the RNA sequence specifies the production of an amino acid chain? (

Is 0.248 greater than 0.29???

A paroxysm of laughter escaped a few. If the ratio of the laughers to the stolid was 2 to 17,and 7600 were in the throng, how many did not laugh

what percent of 240 is 180?

which organelle do you think is the most important organelle for an animal cell? why or why not?