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
erik [133]
2 years ago
14

Alguien me pude decir una adivinanza o historia q la solución sea una ecuación de segundo grado completa????

Mathematics
1 answer:
Hitman42 [59]2 years ago
4 0

Answer:

Una ecuación de segundo grado completa es algo como:

y = a*x^2 + b*x + c

Un problema tipico que usa ecuaciones de este tipo es algo que nos haga multiplicar dos términos como h*(x + k) y n*(x + j)

Donde h, k, n, y j son números reales.

Entonces planteemos el siguiente caso.

"Juan tiene una tabla rectangular, de tal forma que su largo es (x + 3cm), y el ancho es igual a dos veces su largo, si sabemos que el área de esta tabla es 95 cm^2 ¿cuál es el valor de x?"

Acá hay que recordar que para un rectángulo de largo L y ancho W, el área es:

A = L*W

En este caso tendremos:

L = (x + 3cm)

Y el ancho es dos veces eso, entonces:

W = 2*(x + 3cm)

Entonces el area de esta tabla se escribirá como:

A = (x + 3cm)*2*(x + 3cm)

Ahora solo tenemos que expandir eso:

A = 2*x^2 + 12cm*x + 18cm^2

Ahora sabemos que el area de esta tabla es 95cm^2

Entonces:

95cm^2 =  2*x^2 + 12cm*x + 18cm^2

0 = 2*x^2 + 12cm*x + (18cm^2 - 95cm^2)

0 = 2*x^2 + 12cm*x - 77 cm^2

Esta es una ecuación de segundo grado completa, la cual deberiamos resolver para encontrar el valor de x como se nos pide en el problema.

You might be interested in
Type the equation of a line, given a slope of 4 and a y-intercept of 3.
serious [3.7K]

Answer:

y=4x+3

Step-by-step explanation:

3 0
3 years ago
Is this correct?<br><br> Help
Mkey [24]

Everything except for 4 is correct, number 4 is c.


7 0
3 years ago
Read 2 more answers
The lines below are perpendicular. If the green line has a slope of 1/7, what is
Lina20 [59]

Answer:

-7

Step-by-step explanation:

8 0
3 years ago
John lives 35 miles from home, how long will it take him to get home if he is 7 miles away?
-Dominant- [34]
Wouldn't you subtract 35 by 7.

35-7=27 miles
6 0
3 years ago
PLEASE HELP WILL MARK BRAINLIEST
Kipish [7]

Answer:

Step-by-step explanation:

x^2 = 64

√x² = √64

x = 8, -8

answer is B

5 0
3 years ago
Other questions:
  • SORRY I DONT HAVE A PHOTO CAN YOU AT LEAST TRY TO FIND IT OR YOU ARE IN K12 OR SOMTHING IF YOU KNOW THE ANSWER PUT IT PLZ 10 POI
    9·1 answer
  • Which is greater 4.32 or 4.5
    9·1 answer
  • A box has dimensions of 19 inches long, 1.7 feet wide, and 6 inches high. What is the volume of the box? The formula for the vol
    7·2 answers
  • a bicycle store costs $3600 per month to operate .The store pays an average $80 per bike . The average selling price of each bic
    11·1 answer
  • Help me out <br><br> Length = m
    12·1 answer
  • PLZ ANSWER THIS. I really need help from smart people.
    5·1 answer
  • Felicity needs to buy 3 dozen cookies for a party. The first 16 cookies cost $0.28 each. The rest cost $0.19.
    13·2 answers
  • He LSASAP don’t understand been stressing been waiting
    6·1 answer
  • £160 in the ratio 3:5 how much does Oliver get compared to sue
    13·1 answer
  • Which digit in 1,377,207 has a value that is 1/10 the value of the 7 in the ten thousand place?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!