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Ne4ueva [31]
3 years ago
6

SOLVING QUADRATIC EQUATIONS 2) Solve 2x2 - 5 = 27

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
7 0

Answer:

x = ±4

Step-by-step explanation:

Step 1: Write out quadratic

2x² - 5 = 27

Step 2: Add 5 to both sides

2x² = 32

Step 3: Divide both sides by 2

x² = 16

Step 4: Take the square root of both sides

x = ±4

∴ x can equal -4 or 4

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Felipe, Pedro y Miguel son fanáticos del cine. Felipe asiste cada 3 días; Pedro cada 6 días y Miguel cada 5 días. Los tres van j
lilavasa [31]

Answer:

Opción C, 30 días.

Step-by-step explanation:

Sabemos que:

Felipe asiste al cine cada 3 días

Miguel asiste cada 5 días.

Pedro asiste cada 6 días.

Los tres van juntos un día,  ¿dentro de cuántos días irán otra vez juntos?

Los 3 volverán a ir juntos luego de N días, tal que N es el menor múltiplo común de 3, 5 y 6.

Como 6 es múltiplo de 3, podemos ignorar al 3, y solo considerar al menor múltiplo en común de 5 y 6.

Además, como podemos reescribir estos números como un producto de números primos, así obtenemos:

6 = 2*3

5 = 5*1

Estos números no comparten factores entre ellos, por lo que el menor múltiplo entre 5 y 6 es simplemente 5*6 = 30

Entonces podemos concluir que N = 30

Felipe, Pedro y Miguel irán juntos al cine nuevamente dentro de 30 días.

La opción correcta es C.

5 0
2 years ago
Which of the x-values are solutions to the following inequality?<br> X &lt; 365
e-lub [12.9K]
A and b because both values are less than 365
4 0
2 years ago
One number is 8 times another number. The numbers are both positive and have a difference of 70. Find the numbers. Which of the
worty [1.4K]
Let, the first (smaller) number = x
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x = 70/7
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& 8(10) = 80

In short, Your Numbers would be, 10 & 80

Hope this helps!
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yKpoI14uk [10]
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3 years ago
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Answer:

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Step-by-step explanation:

if they have the same amount of dashes on the same sided they are congruent

does that answer your question

6 0
2 years ago
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