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3 years ago

-5x=-9x=11x=12x=8-5x+6(4x+15)=242

Mathematics

2 answers:

Scrat [10]3 years ago

6 0

Hello there!

<em><u>The answer it should be the the last option "x=8".</u></em>

$-5x+6(4x+15)=242\\$

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓

First you had to expand the form.

$6(4x+15):24x+90$

$-5x+24x+90=242$

Then you had to add similar by the elements.

$-5x+24x=19x$

$19x+90=242$

You had to subtract by 90 from both sides of the equation.

$19x+90-90=242-90$

Simplify

$19x=152$

Divide by 19 from both sides of the equation.

$\frac{19x}{19}=\frac{152}{19}$

Simplify it should be the correct answer.

$x=8$

Answer⇒⇒⇒⇒x=8

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

Lyrx [107]3 years ago

4 0

$-5x+6(4x+15)=242\qquad|\text{use distributive property}\\\\-5x+(6)(4x)+(6)(15)=242\\\\-5x+24x+90=242\qquad|\text{subtract 90 from both sides}\\\\19x=152\qquad|\text{divide both sides by 19}\\\\x=8$

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4 years ago

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Step-by-step explanation:

First we stablish the data that we have for each sample:

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To calculate the standard error of each sample we would use the formulas:

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Now, in order to obtain the standard error of the differences between the two sample means we combine those two formulas to obtain this:

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3 years ago

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<h2>Answer:</h2>

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3 years ago

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kakasveta [241]

Check the picture below.

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now, we know the 2nd time around it hit the ground, h(x) = 0, but it took less time, it took 0.5 or 1/2 second less, well, the first time it took 3/2, if we subtract 1/2 from it, we get 3/2 - 1/2 = 2/2 = 1, so it took only 1 second this time then, meaning x = 1.

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quick info:

in case you're wondering what's that pesky -16x² doing there, is gravity's pull in ft/s².

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3 years ago