possumsonmeth69 possumsonmeth69
  • 13-05-2022
  • Mathematics
contestada

the dimensions of a rectangle can be represented by the expressions (x+7) and (x-3). if the area of the rectangle is 75 square feet, find the value of x.

Respuesta :

Markoxmara
Markoxmara Markoxmara
  • 13-05-2022

Answer:

Step-by-step explanation:

Area of rectangle is  b*h

so

a = (x-3)(x+7)

75 = (x-3)(x+7)

75 = x²+4x-21

0 = x²+4x-96

(x+12)(x-8)=0

x = -12, or x = 8

Answer Link

Otras preguntas

A demand curve that is horizontal indicates that the commodity
The democratic republican party was based on the idea that the central government of a country should be what?
Why did al qaeda attack the twin towers in 1993?
A pronoun that refers to the speaker, the person spoken to, or the person spoken about is called a(n) _____ pronoun.
A chemical that causes a sudden, almost instantaneous release of pressure, gas and heat when subjected to sudden shock, pressure or high temperatures best descr
Based on the activity series provided, which reactants will form products? F >Cl >Br >I
How many grams of sodium chloride are present in a 0.75 M solution woth volume of 500.0 milliliters?
Which of the following statements is correct? A) P and S waves travel through liquids, but P waves do not travel through solids. B) P waves travel through solid
Is LiOH soluble or insoluble? Is Na2CO3 soluble or insoluble? Cu(OH)2 soluble or insoluble?
Solve this using the elimination method 4x - 3y = 22 2x + 8y = 30