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vichka [17]
2 years ago
15

50pts help! consider this quadratic equation. 2x^2-1=3x+4 Which equation correctly applies to the quadratic formula?

Mathematics
2 answers:
eduard2 years ago
7 0

Step-by-step explanation:

im not going to go in to detail but the answer is c

DaniilM [7]2 years ago
4 0

Answer:

c

Step-by-step explanation:

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Please see attachment for the question.
nekit [7.7K]

Answer:

\frac{ {20x}^{3}  -  {7x}^{2} + 3x - 7 }{ { - 13x}^{2}  - 5}

-13x²-5≠0

13x²+5≠0

x²≠ -5/13

option D

8 0
2 years ago
Read 2 more answers
Ari mixed 2 1/4 cups of red grapes with 1/2 cups of green grapes. He then divided the grapes into bags with 3/4 cup of mixed gra
Oxana [17]

To start, our equation will look like this:

(2 1/4 + 1/2)/ 3/4 = b

To make it easier convert the 2 numbers inside the parentheses into improper fractions, and then multiply them by their least common denominator to add.

(9/4 + 1/2)

(18/8 + 4/8)

(22/8)/ 3/4 = b

Now, to divide 22/8 cups of grapes into bags with 3/4 cup of grapes, multiply 22/8 by 4/3.

(22/8)(4/3)=b

3 2/3 = b

So, if Ari has a bag with 2 1/4 cups of red grapes and 1/2 cup of green grapes, and he divides it into bags with 3/4 cup each, he will have about 3 full bags.

6 0
2 years ago
Read 2 more answers
Al obtener el valor de lo que costará la fiesta de graduación para tu grupo te das cuenta que el lugar que decidieron alquilar p
dybincka [34]

Explicación paso a paso:

Debemos buscar el costo de cada boleto y la cantidad de personas que deben ir.

Dada la función que da forma al comportamiento expresado como;

f (x) = (-2x) ^ 2 + 80x + 300 donde;

x es el costo de cada boleto

f (x) es el número de personas que deben ir

Para obtener x, usaremos la expresión;

x = -b / 2a

De la ecuación cuadrática dada, a = -2, b = 80 yc = 300

Sustituir;

x = -80/2 (-2)

x = -80 / -4

x = 80/4

x = 20

Por lo tanto, el boleto cuesta $ 20.

Lo siguiente es obtener la cantidad de personas que deben ir. Para conseguirlo, sustituiremos x = 20 en la expresión modelada como se muestra;

f (x) = (-2x) ^ 2 + 80x + 300

f (20) = (-2 (20)) ^ 2 + 80 (20) +300

f (20) = (-40) ^ 2 + 1600 + 300

f (20) = 1600 + 1600 + 300

f (20) = 3500

Por lo tanto, 3500 personas tienen que ir

8 0
2 years ago
which statement could be used to explain why f(x) = 2x – 3 has an inverse relation that is a function? a. the graph of f(x) pass
alex41 [277]
F(x) is a one-to-one function.
4 0
2 years ago
Read 2 more answers
93.34 divided by x = 18.69
jeka57 [31]

Answer: 4.99 (answer would be 5 if rounded)

Step-by-step explanation:

93.34/18.69=x

x=4.99

3 0
2 years ago
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