Safa287 Safa287

01-07-2021
Mathematics

contestada

the area of the rectangle is 48cm^2
show that x satisfies the equation x^2 + 7x -78 = 0

the area of the rectangle is 48cm2 show that x satisfies the equation x2 7x 78 0 class=

Respuesta :

Аноним Аноним

01-07-2021

Answer:

No its doesn't satisfy the equation.

[tex]{ \bf{area = 2(l + w)}} \\ { \tt{48 = 2((x + 10) + (x - 3))}} \\ { \tt{24 = 2x + 7}} \\ 2x = 17 \\ x = 8.5 \\ \\ { \bf{in : \: {x}^{2} + 7x - 78 = 0 }} \\ x = 6 \: \: and \: \: - 13[/tex]

Answer Link

Otras preguntas

Please help! I will mark as brainliest IF answer is right. <3

Unde işi găseşte locul castana?

Hello, can someone help me, please ? I need to answer those questions specifically : 1. Why would people blame all members of an ethnic or religious group for t

Please someone help me. Im giving brainliest !!!!

most of the internal operations in a computer use hexagonal numbering true or false 100 points pls help asap

In figure find the area of the red part.

PLEASE HELPAND EXPLAIN!!! THIS IS A GEOMETRY QUESTION AND I ONLY HAVE ONE MORE ATTEMPT LEFT. NO LINKS OR BAD ANSWERS!!!!!!!!!

Select the subject of the sentence.

help please I really need help

A substance made up of two or more elements that have been chemically combined is called an atom a mixture an element a compound - - - please help:)