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
Anettt [7]
3 years ago
14

Use the zero product property to find the solutions to the equation 2x2 + x - 1 = 2

Mathematics
1 answer:
Firdavs [7]3 years ago
8 0

Answer:

C

Step-by-step explanation:

Given

2x² + x - 1 = 2 ( subtract 2 from both sides )

2x² + x - 3 = 0

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 2 × - 3 = - 6 and sum = + 1

The factors are - 2 and + 3

Use these factors to split the x- term

2x² - 2x + 3x - 3 = 0 ( factor the first/second and third/fourth terms )

2x(x - 1) + 3(x - 1) = 0 ← factor out (x - 1) from each term

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

Equate each factor to zero and solve for x

x - 1 = 0 ⇒ x = 1

2x + 3 = 0 ⇒ 2x = - 3 ⇒ x = - \frac{3}{2}

You might be interested in
Pleeeeeeeeaaaseeeeee help meeeeeeee!!!!!!!!!
zaharov [31]

Answer:

Option D.

A =96\pi\ cm^2

Step-by-step explanation:

The area of the circular bases is:

A_c = 2\pi(a) ^ 2

Where

a=4\ cm is the radius of the circle

Then

A = 2\pi(4) ^ 2

A = 32\pi\ cm^2

The area of the rectangle is:

A_r=b * 2\pi r

Where

b=8\ cm

b is the width of the rectangle and 2\pi r is the length

Then the area of the rectangle is:

A_r=8 * 2\pi (4)

A_r=64\pi\ cm^2

Finally the total area is:

A = A_c + A_r\\\\A = 32\pi\ cm^2 + 64\pi\ cm^2\\\\

A =96\pi\ cm^2

7 0
3 years ago
Read 2 more answers
Answer please thanks ^^^
Thepotemich [5.8K]

Answer:

G

Step-by-step explanation:

5 0
3 years ago
Someone told me the answer was 39?? Is this true? Why ? please help.
Ira Lisetskai [31]
The problem has the equation:

f(x) = (3) ^ (x/2)

In order to get the average increase in the number of flowers being pollinated from day 4 to day 10, then we need to use the equation substituting x with 4 to 10

f(4) = 9
f(5) = 12.59
f(6) = 27
f(7) = 46.77
f(8) = 81
f(9) = 140.30
f(10) = 243

Then add all the values and divide it by 7
 = 559.66 / 7
= 79.95

So the correct answer is 79.95
8 0
3 years ago
If 1 US dollars can be exchanged for 0.55 Euros, how many Euros can be obtained when exchanging 47 U.S. dollars?
Zinaida [17]

Answer:

25.85 Euros

Step-by-step explanation:

1 US dollar = 0.55 Euros

0.55 x 47 = 25.85 Euros

Hope this helped :)

8 0
2 years ago
Read 2 more answers
The leg of a right triangle is 2 units and the hypotenuse is 4 units. What is the length, in units, of the other leg of the tria
inysia [295]
The other leg of the units is 2
6 0
3 years ago
Read 2 more answers
Other questions:
  • Helppppppppppppppppppppppppppp meeeeeeeeeee
    5·1 answer
  • Complex Numbers<br> Subtract.<br> 7-(-6+3i)-(-3-i)
    7·2 answers
  • Debra bought 7 boxes of chocolates. Each box cost $9.55. How much did she spend?
    14·1 answer
  • Please help!<br> -300<br> 120<br> 300
    7·1 answer
  • Plz help I’m you guessed it desperate
    9·1 answer
  • <img src="https://tex.z-dn.net/?f=2x%5E%7B2%7D%20%2B%203%20%3D%205" id="TexFormula1" title="2x^{2} + 3 = 5" alt="2x^{2} + 3 = 5"
    13·1 answer
  • 7. Which of the following illustrates the commutative property of multiplication?
    6·1 answer
  • The dishes have been cleaned by us into active voice​
    5·2 answers
  • Okay ANSWER NOW fknglknkljgl;3jg;k4g;lnsrbjbjkg
    9·1 answer
  • Tammy’s home cost her $184,000. She lives in an area with a lively real estate market, and her home increases in value by 3. 5
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!