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3 years ago

W6+58=-138!! what is x PLEASE

Mathematics

2 answers:

mote1985 [20]3 years ago

7 0

Answer:

the answer is -196 im sorry if i got it wrong

Step-by-step explanation:

omeli [17]3 years ago

4 0

Answer:

w = ~ - 32.7

Step-by-step explanation:

w6 + 58 = -138

Subtract 58 on both sides

w6 + 58 - 58 = -138 - 58

w6 = -196

Divide by 6 on both sides to isolate the variable

w6/6 = -196/6

w = - 32.66666666666667

w = ~ - 32.7

Hope this helped!

Have a supercalifragilisticexpialidocious day!

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4 years ago

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If x>7, then |x|>7. |y|>7, so y=7 Valid or invalid?

Alex

$\text{if }x>7\text{, then }|x|>7$ is a valid argument

$|y|>7\text{, so }y=7$ is not a valid argument

For the first argument: $\text{if }x>7\text{, then }|x|>7$

From the definition of absolute value function

$|x|=x$ if $x\ge0$

That is every positive number is its own absolute value. Since

$x>7\implies x\ge0$ ,

we can argue that

$x>7\implies |x|>7$

so the first argument is valid

For the second argument: $|y|>7\text{, so }y=7$

From the definition of absolute value function

$|y|:=\left \{ {y\text{ if }y\ge0}\atop{-y\text{ if }y$

This means that

$|y|>7:=\left \{ {y>7\text{ if }y\ge0}\atop{-y>7\text{ if }y$

$|y|>7:=\left \{ {y>7\text{ if }y\ge0}\atop{y$

no part of the definition allow for the option $y=7$ . So the second argument is not valid.

Learn more here: brainly.com/question/11897796

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3 years ago

Which represents the solution set to the inequality -1.5(4x + 1) > 4.5 -2.5(x + 1)?

laila [671]

<h2>The solution set to inequality is:</h2>

$\boxed{-1.5\left(4x+1\right)>4.5-2.5\left(x+1\right)\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:x$

Solution:

Given inequality is:

$-1.5(4x + 1) > 4.5 -2.5(x + 1)$

We have to find the solution set to inequality

From given,

$-1.5(4x + 1) > 4.5 -2.5(x + 1)\\\\\mathrm{Multiply\:both\:sides\:by\:}10\\\\-1.5\left(4x+1\right)\cdot \:10>4.5\cdot \:10-2.5\left(x+1\right)\cdot \:10\\\\-15\left(4x+1\right)>45-25\left(x+1\right)$

Expand

$-60x -15 > 45 -25x - 25\\\\Simplify\\\\-60x-15>-25x +20$

$\mathrm{Add\:}15\mathrm{\:to\:both\:sides}\\\\-60x-15+15>-25x+20+15\\\\Simplify\\\\-60x>-25x+35\\\\\mathrm{Add\:}25x\mathrm{\:to\:both\:sides}\\\\-60x+25x>-25x+35+25x\\\\Simplify\\\\-35x>35\\\\\mathrm{Multiply\:both\:sides\:by\:-1\:\left(reverse\:the\:inequality\right)}\\\\\left(-35x\right)\left(-1\right)$

Thus the solution set is:

$-1.5\left(4x+1\right)>4.5-2.5\left(x+1\right)\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:x$

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3 years ago

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