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Alik [6]
1 year ago
10

If the quadratic formula is used to find

Mathematics
1 answer:
Anuta_ua [19.1K]1 year ago
5 0

The two roots obtained for the quadratic equation by quadratic formula are 1.5 and 4.

<h3>What is defined as the quadratic formula?</h3>
  • A quadratic equation is just a polynomial with a second degree first term.
  • There are several methods for determining the roots, or solutions, of such a quadratic equation.
  • Every quadratic equation has two solutions, that might or might not be real numbers.
  • The quadratic formula is a simple method for resolving a quadratic equation. whether the answer is a whole number, an irrational number, or perhaps an imaginary number

If the quadratic equation is ax² + bx + c = 0.

Then, the roots are given by x = [-b ± √(b² - 4ac)]/2a.

The quadratic equation is given as; 2x² - 5x - 12 = 0.

On comparing with the standard form;

  • a = 2
  • b = -5
  • c = -12

Put the values in the formula,

x = [-b ± √(b² - 4ac)]/2a.

x = [-(-5) ± √((-5)² - 4×2×(-12))] / 2×2

On simplification,

x = [5 ± 11]/4

There will be two roots of equation,

a; x =  [5 + 11]/4

x = 16/4 = 4

b ; x = [5 - 11]/4

x = 6/4 = 1.5

Thus, the two roots obtained for the quadratic equation by quadratic formula are 1.5 and 4.

To know more about the quadratic formula, here

brainly.com/question/1214333

#SPJ13

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7
ella [17]

Given:

Two similar rectangles.

To find:

The area of the larger rectangle.

Solution:

Let x be the other side of the larger rectangle.

Corresponding sides of similar figures are always congruent.

\dfrac{x}{1}=\dfrac{4}{2}

x=2

The other side of larger rectangle is 2 cm.

We know that, area of rectangle is

Area=Length\times Width

So, area of the larger rectangle is

Area=4\times 2

Area=8

Therefore, the area of the larger rectangle is 8 sq. cm.

6 0
3 years ago
20,18,13,17,18 find the mean,median and mode​
Degger [83]
<h3>Answer:</h3>

Mean: 17.2

Median: 18

Mode: 18

<h3>Solution:</h3>

Mean: The sum of all observation divided by several observation

  • 20+18+13+17+18=86
  • 86÷5=
  • 17.2

Median:it is the middlemost observation of data arraged in increasing or decreasing order of values

  • (13,17,18,18,20)
  • (17,18,18)
  • (18)

Mode:it is the value that occurs frequently in a set of data

  • (13 , 17 , 18 , 18 , 20)

Hope it helps

6 0
2 years ago
Read 2 more answers
Wayne types about 50 words per minute.A typical double spaced page contains 500 words.how long doe sit take Wayne to type 8 1/2
Katarina [22]

Answer:

Step-by-step explanation:

50t=500(8.5)

t=10(8.5)

t=85 minutes

3 0
3 years ago
Read 2 more answers
-5(4b+ 7) = distributive property
vova2212 [387]

Answer:

-20b-35

Step-by-step explanation:

8 0
2 years ago
What is 5 cm to km? is it 0,00005? if im wrong please correct me because tomorrow i have exam
astra-53 [7]
It's 0.00005 so yeah you're correct
3 0
3 years ago
Read 2 more answers
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