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

Which word would best complete the following analogy? Bird: nest as horse:_____ gallop paddock whinny den I NEED HELP
318 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student tickets sold was two times the number of adu
Tim has a cat that cost $25, which is 20% more than it cost last month...what did it cost last month?
Which scenarios are examples of synthesizing ?
what date did george washington get married
SELLA TRUCICA is a process on A. frontal bone B. parietal bones C. temporal bones D. occipital bone E. sphenoid bone F. ethmoid bone G. maxillary bones H. palat
#2 – What is the name of the highest mountain range in the world located in India? Answer 2:
Why is my dog coughing like something is stuck in his throat?.
46.231 divided by 1000
After all pleadings are filed and discovery is completed, a party may ask the judge to rule in their favor on the basis that there are no genuinely disputed fac