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3 years ago

1/4 x + 1/6 x = x-7.

Mathematics

1 answer:

weeeeeb [17]3 years ago

5 0

Answer:

x=12

Step-by-step explanation:

Simplify both sides by adding like terms

5/12x=x-7

subtract x from both sides

-7/12x=-7

multiply both sides by 12/-7

x=12

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Which expression is equivalent to 36x2 - 25?

Dimas [21]

Answer:

The equivalent expression is: (6x + 5)*(6x - 5)

Step-by-step explanation:

This expression is called the difference of two squares.

It has the following format: $a^{2} - b^{2}$

It is factored as: $a^{2} - b^{2} = (a-b)*(a+b)$

In this question:

$a^{2} - b^{2} = 36x^{2} - 25$

$a^{2} = 36x^{2}$ , then $a = \sqrt{36x^{2}} = 6x$

$b^{2} = 25$ , then $b = \sqrt{25} = 5$

The equivalent expression is: (6x + 5)*(6x - 5)

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3 years ago

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ryzh [129]

It is 3 because you switch the sign, then flip the fraction. Making it 3/1 which is just 3

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3 years ago

-5x -10 >30 help Hehehehehe.

Mnenie [13.5K]

Answer:

x<-8

Step-by-step explanation:

-5x-10>30

(add 10 to both sides)

-5x-10+10>30+10

-5x>40

$\frac{-5x}{-1}$ < $\frac{40}{-1}$

(dividing through by -1 changes the sign of the inequality from "<" to ">")

5x<-40

(dividing through by 5)

$\frac{5x}{5}$ < $\frac{-40}{5\\}$

x<-8

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Step-by-step explanation:

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