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mylen [45]
3 years ago
13

The graph of a certain quadratic function does not cross the x-axis. Which of the following are possible values for the discrimi

nant? check all that apply.
a) 18
b) 0
c) -25
d) -7
Mathematics
1 answer:
irinina [24]3 years ago
3 0
The graph of a quadratic function does not cross the x-axis if the discriminant has negative value.
Answers:
C ) -25
D ) -7
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K/-17 = -25<br><br> What is k?
Evgen [1.6K]

Answer:

425

Step-by-step explanation:

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Como hago para calcular el porcentaje de unos datos agrupados , porfa ayuda no entiendo. osea tipo : tengo que calcular cual es
KatRina [158]

Answer:

Falta información para darte una respuesta exacta, así que voy a dar una explicación general de este tipo de problemas.

Querés saber cuál es el porcentaje de personas que trabajan y están en el rango de edades entre 31 y 46.

Entonces lo primero que tenemos que hacer es encontrar el número total de personas que trabajan, digamos que es T (esto es el 100%)

Luego hay que encontrar el número total de personas que trabajan y tienen entre 31 y 46, digamos que es N.

Podemos relacionar estas cantidades con porcentajes de la siguiente manera:

N = P

T = 100%

Donde P es el porcentaje que queremos calcular.

Si tomamos el cociente de esas dos ecuaciones, obtenemos:

N/T = P/100%

Resolviendo para P obtenemos:

(N/T)*100% = P

El porcentaje de personas que trabajan y tienen entre 31 y 46 va a ser entonces:

P = (N/T)*100%

Así sabiendo el número total de personas que trabajan y el número de personas que trabajan y además tienen edades entre 31 y 46, podemos calcular el porcentaje que queremos.

Particularmente decis que no sabes si colocar 3% o 4%.

Lo que podria implicar que tambien quizas tengas un problema de redondeo.

Si tenes un numero como:

3.a%

donde a es un digito entre 0 y 9

si a es menor que 5, entonces redondeamos para abajo, y asi obtenemos:

3.a% = 3%

si a es igual a 5 o mayor, redondeamos para arriba, asi obteniendo:

3.a% = 4%.

4 0
3 years ago
Everything. I DON'T HAVE A CLUE.
shepuryov [24]
(x,y) = (0,0) x=0 y=0 I would use the elimination method. hope this helped 
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3 years ago
Mercedis is going to have her car fixed
Luda [366]

Answer:

this doesn't make sense what's the question

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Priya wants to buy three tickets for a concert. She has earned $195 and each ticket costs $80. She borrows the rest of the money
Ludmilka [50]

Answer:

First one : 3

Step-by-step explanation:

First one : Makes more sense for number 3. We do not know how much money she has now because we do not know the number of tickets.

Second one : I really do not know

Third one : 1

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