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4 years ago

Solve for x

Mathematics

1 answer:

serg [7]4 years ago

6 0

Hey there!

$\bold{4x^2+23x+28=0}$
<em>Firstly, factor the left side of your equation </em>
$\bold{(4x+7)(x+4)=0}$
<em>Set each of your terms to the number of $\bold{0}$ </em>
$\bold{4x+7=0}$ $\bold{or}$ $\bold{x+4=0}$
$\boxed{\boxed{\bold{Answer:D.)x=\frac{-7}{4} [or]x=-4}}}$ $\bold{\checkmark}$

Good luck on your assignment and enjoy your day!

~ $\bold{LoveYourselfFirst:)}$

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Is this correct not that sure

Arte-miy333 [17]

Yes there is a 2/3 chance. This is fun stuff!

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3 years ago

If A+B+C=<img src="https://tex.z-dn.net/?f=%5Cpi" id="TexFormula1" title="\pi" alt="\pi" align="absmiddle" class="latex-formula"

seraphim [82]

Answer:

$a + b + c = \pi \\ = > c= \pi - a - b \\ < = > \tan(c) = \tan(\pi - a - b) = -\tan(a + b)$

Step-by-step explanation:

we have:

$\tan(a) + \tan(b) + \tan(c) \\ = \tan(a) + \tan(b) - \tan(a + b) \\ = \tan( a) + \tan(b) - \frac{ \tan(a) + \tan(b) }{1 - \tan(a) \tan(b) } \\ = \frac{ ( \tan(a) + \tan(b) ) \tan(a) \tan(b) }{ \tan(a) \tan(b) - 1 } (1)$

we also have:

$\tan(a) \tan(b) \tan(c) \\ = - \tan(a) \tan(b) \tan(a + b) \\ = \frac{ -(\tan( a ) + \tan(b) ) \tan(a) \tan(b) }{1 - \tan(a) \tan(b) } \\ = \frac{( \tan(a) + \tan(b)) \tan(a) \tan(b) }{ \tan(a) \tan(b) - 1 } (2)$

from (1)(2) => proven

5 0

3 years ago

Please help meeeeeeeeee

castortr0y [4]

Answer:

37.3% is the take off

Step-by-step explanation:

so an easy route is to subtract the price after the reduction

89.99-56.49= 33.5 that is 37.3 percent

because 62.78% of 89.99 is 56.486723 round i and you get 56.49 so this is a check your work

4 0

3 years ago

BRAINLIEST FOR BEST ANSWER ** What is the degree number of Z?

irinina [24]

Answer:

the answer is D. 147 degrees

Step-by-step explanation:

114+33=147

check answer by

180-147=33

33+33+114=180

4 0

3 years ago

Read 2 more answers

Here is a CD rack. One Rack holds 25 CD's. David has 83 CD's. Lin has 6 full racks of CD's. How many racks does David need to ho

Dimas [21]

If David has 83 CD's, and each rack holds 25, then David would need 4 racks. 4 racks will hold up to 100 CD's, where as 3 racks would only hold 75.

I'm not sure what 'Lin' has to do with this equation, but if she has 6 racks full of CD's then in total she has 150 CD's.

Hope this helps! :)

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3 years ago