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3 years ago

DONT PUT FAKE ANSWERSWhat are the solutions to this quadratic equation? 5x^2-7x-18=0

Mathematics

1 answer:

MrMuchimi3 years ago

6 0

Answer:

The answer is B

Step-by-step explanation:

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Urgent!!! PLEASE HELP, FAST!!!

gayaneshka [121]

The best way to solve this is to put it into a proportion:
$\frac{x}{84} = \frac{ \frac{1}{4} }{ \frac{3}{4} }$
So you cross multiply to get:
$21= \frac{3}{4} x$ (the 21 is from $\frac{1}{4}$ •84)
Then multiply by $\frac{4}{3}$
And you get $28, so the reduced price would be $28.

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3 years ago

How do you factor this trinomial 4a^2-4a+1

ElenaW [278]

Answer:

$(2a-1)(2a-1)$

Step-by-step explanation:

To write the factored form, multiply a*c from the standard form $ax^2+bx+c$ . Here it is 4*1 = 4.

Then find factors of 4 that add to b=-4.

4: 1,2,4

-2+-2 = -4

Split the middle term into -2x+-2x and factor by grouping.

$4a^2-2a+-2a+1\\(4a^2-2a)+(-2a+1)\\2a(2a-1)-1(2a-1)\\(2a-1)(2a-1)$

4 0

3 years ago

Please need help, Will give brainiest!!!!

timurjin [86]

I'd say its D but im not quite sure, its what makes most sense to me.

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3 years ago

Find the values of x and y. Leave answers in simplest radical form.<br>

NNADVOKAT [17]

$\sin(60°) = \frac{x}{14} \Leftrightarrow x = 14 \sin(60°) = \frac{14 \sqrt{3} }{2} = 7 \sqrt{3} \\ \cos(60°) = \frac{y}{14} \Leftrightarrow y = 14\cos(60°) = \frac{14}{2} = 7$

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3 years ago

Help lolz nsjsdh fgd fnf

Makovka662 [10]

Answer:

It's just like reflection

Step-by-step explanation:

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3 years ago

DONT PUT FAKE ANSWERSWhat are the solutions to this quadratic equation? 5x^2-7x-18=0​

DONT PUT FAKE ANSWERSWhat are the solutions to this quadratic equation? 5x^2-7x-18=0