isasialex isasialex

19-10-2021
Mathematics

contestada

What is the sum of the roots of the equation 2 x^2 + 5 x − 3 = 0?
a)-3.5
b)-2.5
C)-1.5
D)2.5

Respuesta :

calvinghasemi8000 calvinghasemi8000

19-10-2021

Answer:

B) -2.5

Step-by-step explanation:

2x^2 + 5x -3 = 0

(2x - 1)(x + 3) = 0

2x - 1 = 0; 2x = 1, so x = 1/2 = ROOT 1

x + 3 = 0, so x = -3 = ROOT 2

Now add the roots: -3 + 1/2 = - 2 1/2, so the answer is B.

Answer Link

Otras preguntas

Please help me with my assignment

Read the sentence from paragraph two of the excerpt from My Antonia and answer the question. Within a week all the blooming roads had been despoiled, hundreds

LC) How does breathing change during exercise? Rate and depth decrease Rate and depth increase Rate increases and depth decreases Rate decreases and depth incre

8. Patrick bought five new baseball trading cards to add to his collection. The next day his dog ate half of his collection. There are now only 31 cards left. H

Which plot description is the best example of a tragedy?

Humans breathe in oxygen and release ____ gas.

Bahadur Lal is working as a junior officer in the National Park. How is he contributing towards green economy? Justify your answer.

HELP A car traveling at 4m/s accelerates at a rate of .80m/s2 for 1.8s. What is its final velocity?

Find the probability of rolling an even sum or a sum greater than 7 when a pair of dice is rolled

In a survey at a shoe store, 200 customers were asked whether they have running shoes or basketball shoes. The results are in the relative frequency table Total