ariannamacias0086
ariannamacias0086 ariannamacias0086
  • 25-04-2021
  • Mathematics
contestada

Select the two values of x that are roots of this equation.
2x^2 — 11x + 15 = 0

A. x = 5
B. x = 3
C. x = 6
D. x = 5/2

Select the two values of x that are roots of this equation 2x2 11x 15 0 A x 5 B x 3 C x 6 D x 52 class=

Respuesta :

tankisfun97 tankisfun97
  • 25-04-2021

Answer:

3 ; 5/2

Step-by-step explanation:

Δ= 121 - 120 = 1

x1 = (11 + 1)/4 = 3

x2 = (11-1)/4 =5/2

Answer Link
botikoti24
botikoti24 botikoti24
  • 25-04-2021

Answer:

Step-by-step explanation:

We can use the formula of delta.(you can see it in the picture down below)

So:

a=2

b=-11

c=15

So delta=-11 x -11 - 4*2*15

delta=121-120

delta=1

x1=-(-11)+1/4

x1=11+1/4

x1=12/4

x1=3

x2=11-1/4

x2=10/4

x2=5/2

Ver imagen botikoti24
Answer Link

Otras preguntas

Use the drop-down menus and the context clues the sentences to define these words: across the island. Various conveyances, such as cars, buses, and trains, take
0.08 is 10 times as great
Which of these was true under the Articles of Confederation? A. Congress passed laws allowing for free passage between states. B. Laws were passed if the two la
How are correlation and causation similar?
What was the author’s view of the events in "The Necklace"?
An antonym is a word that means nearly the opposite of another word. Which word is an antonym for discordant?
Find the missing angle
which angle? please help
Answer the question by filling in the blank: Question: ¿Hay un ratón? ¿De qué color es? -sí, hay un ratón ____
Which statement is an example of a resolution?A The bus service is unreliable because it is late.B Voting is one right that citizens have in the United States.C