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3 years ago

Que es fraccion conbinadas

1 answer:

3 0

Como las fracciones representan números reales se mantiene la jerarquía de las operaciones de éstos.
Si no hay paréntesis, ni potencia y radicales, la mayor jerarquía la tiene la multiplicación o división que está más a la izquierda.
Se puede proceder eliminando una por una, de izquierda a derecha, todas las multiplicaciones y divisiones.

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Please help me with Alegbra 2!! Solve x2 + 4x + 1 = 0.

Julli [10]

$x^2+4x+1=0\\\\\underbrace{x^2+2x\cdot2+2^2}_{(x+2)^2}-2^2+1=0\\\\use\ (a+b)^2=a^2+2ab+b^2\\\\(x+2)^2-4+1=0\\\\(x+2)^2-3=0\\\\(x+2)^2=3\iff x+2=\sqrt3\ or\ x+2=-\sqrt3\\\\\boxed{x=\sqrt3-2\ or\ x=-2-\sqrt3}$

7 0

3 years ago

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This equation has one solution. 5(x – 1) + 3x = 7(x + 1) What is the solution?

bogdanovich [222]

Open up the brackets
$5x - 5 + 3x = 7x + 7$
Collect like terms
$5x + 3x - 7x = 7 + 5$
Simplify
$8x -7x = 12$
$x = 12$
Therefore, your answer is 12.

5 0

4 years ago

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The following two-way table describes student's

guajiro [1.7K]

P ( work/ senior ) = 0.14

The attached table

required

P ( work/ senior )

This is calculated using:

P ( work/ senior ) = n ( work/ senior )/ n ( senior ).

n ( work/ senior ) = 5

n ( senior ) = 25 + 5 + = 35

So:

P ( work/ senior ) = 5/35

P ( work/ senior ) = 0.14

Add 25+5+5 (because that is all the numbers in the 'Seniors' row) and then take the 5 that is in the 'Work' column and put that over 25. (5/25 fraction as a percent is 14).

Learn more about probability at

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7 0

2 years ago

Can someone explain this for me??<br> 4 (c+2) < 4c + 10

faust18 [17]

Answer:

The inequality would be true

Step-by-step explanation:

4(c+2) < 4c + 10

Distribute the 4 on the left

4c + 8 < 4c + 10

Subtract 4c from both sides

8 < 10

8 < 10 is true

7 0

3 years ago

Why does 2(2x+3)=4x+6

PilotLPTM [1.2K]

The 2 outside the brackets means that everything within the brackets needs to be multiplied by 2

8 0

3 years ago

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