1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
krek1111 [17]
2 years ago
10

B) 2x² - 4x + 3 = 0 a) x² + 3x – 10 = 0

Mathematics
1 answer:
kozerog [31]2 years ago
3 0

Answer:

a. x = 2 , x = -5

b. no real roots

Step-by-step explanation:

<u>a. x² + 3x – 10</u>

= x² - 2x + 5x - 10

= x (x²/x - 2x/x) + 5 (5x/5 - 2*5/5)

= (x - 2) (x + 5)

x - 2 = 0                            x + 5 = 0

 + 2    +2                             -5     -5

--------------                         ---------------

x = 2                                   x = -5

x = 2 , x = -5

<u>b. 2x² - 4x + 3 </u>

This can't be solved because the equation has no real roots, and also the discriminant is negative.

You might be interested in
If h(x) = 2x^2 , then h(-2) + 5=_________
Vaselesa [24]

Answer:

13

Step-by-step explanation:

Given the equation h(x) = 2x²

To solve for h(-2) + 5 then, we need to break the problem into two parts

First, we will solve for the function h(x) at x = -2

h(x) = 2x² so

h(-2) = 2(-2)²

h(-2) = 8

Knowing this, we can plug 8 into our original expression for h(-2)

8 + 5

This gives us 13

8 0
3 years ago
please help don't know how to do this A stone is an English measure of weight. There is 14 lb in 1 stone and 2.2 lb in 1 kg. A c
Korvikt [17]

14 * 9 Then divide your answer by 2.2 and you will get your Kg

5 0
3 years ago
Fractor 48-8x to identify the equivalent expressions
ale4655 [162]

Answer:

8(6-x)

Step-by-step explanation:

factor out an 8

8*6 -8*x

8(6-x)

8 0
3 years ago
9. Water is added to two containers for 16 minutes. The equations below model the ounces of
Vladimir [108]

The two containers hold 328 ounces at the they hold same amount of water.

<u>Step-by-step explanation:</u>

The equations below model the ounces of  water, y, in each container after x minutes.

y = 16x + 104

y = -2x^{2} +40x+160

At the time after the start when the containers hold  the same amount of water, the two equations must be equal.

⇒ 16 x + 104 = -2x^{2}  + 40 x + 160

The first step is to divide everything by 2 to make it simplified.

⇒ 8 x + 52 = - x^2 +20 x + 80

Now put everything on the left .

x^2 + 8 x - 20 x + 52 - 80 = 0

Add the like terms together to further reduce the equation

x^2 - 12 x - 28 = 0

Factorizing the equation to find the roots of the equation.

Here, b = -12 and c = -28

where,

  • b is the sum of the roots ⇒ -14 + 2 = -12
  • c is the product of the roots ⇒ -14 × 2 = -28
  • Therefore, (x-14) (x+2) = 0
  • The solution is x = -2 or x = 14

Take x = 14  and substitute in any of the given two equations,

⇒ y = 16(14) + 104

⇒ y =224+104

⇒ 328 ounces

∴ The two containers hold 328 ounces at the they hold same amount of water.

5 0
3 years ago
PLEASE HELP
vodka [1.7K]
Proportional mate try that maybe then
6 0
3 years ago
Other questions:
  • Write 12.5% as a fraction or mixed number in simplest form
    9·2 answers
  • Which explains how to find the radius of a circle whose equation is in the gorm x^2+y^2=z
    7·1 answer
  • Assignment
    14·2 answers
  • The sum of the square of a positive number and the square of 3 more than the number is 89. What is the​ number?
    6·1 answer
  • Ellen and Michelle scored 48% of their teams points. If their team has a total of 50 points, how many points did they score ? ex
    15·2 answers
  • Find the common difference of the arithmetic sequence 4, 10, 16,...​
    14·2 answers
  • Kristy had a piece of fabric that she cut into 8 equal squares. Each square has area 0.625 ft2. What is the area of Kristy's ori
    14·1 answer
  • Hi could can you please tell me the answer and tell me how you got it so I can understand this? Both 6 A and B
    8·1 answer
  • How much of a circle does a 100-degree angle turn through?
    11·1 answer
  • . Trevor mows 5 times as
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!