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

A tributary joins a river at an angle. Find the value of x. WhAt this is- just- uGh
in figure 5.19 to the right PQRS is a rectangle. if PS=5cm and PR=13cm find SR and QS.​
How do you think a peace treaty can cause war instead of creating peace?
b/-3 + 4 ^ 13 what is b
Help me please!!! This is timed!!
what is the full form of CRT​
¿Piensas que existe una buena y una mala literatura?
I need someone to tell me if my first paragraph of my argument paper sounds good. i feel like it sounds weird. my topic is: should poetry be taught more in sch
Magazines are packed into cartons for distribution. Each hour one person can pack 45 cartons. How many people are needed to pack 1200 cartons
A teepee in the shape of a cone has a radius of 7 feet and a height equal to its diameter. What is the volume of the teepee? Use 3.14 for .