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Vilka [71]
3 years ago
7

4x2 + 3 = -7x solve for xx=_,_​

Mathematics
1 answer:
Alenkinab [10]3 years ago
3 0

\displaystyle\bf 4x^2+3=-7x\\4x^2+7x+3=0  \\\\D=49-48=1  \\x_1=\frac{-7+1}{8} =-\frac{3}{4} \\x_2=\frac{-7-1}{8} =-1\\\\Answer: \boxed{  x_1=-\frac{3}{4} \quad ; \quad x_2=-1}

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What is the solution to the equation x + 14 = 63? (Input a whole number only.) (3 points) Blank 1:
Alex

Hey there!

This is a one-step equation, meaning that we can solve it in one step.

This is the step:

  • Subtract 14 from both sides

Goal:

  • To find out the value of x

Subtract 14:

x+14-14=63-14

the 14's on the left cancel:

x=49

Hence, the answer is

\boxed{\boxed{\bold{x=49}}}

Hope everything is clear.

Let me know if you have any questions!

#LearningDoesn'tEnd

:-)

\rule{200}{2}

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2 years ago
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New price: p2 = $ 3.40.


The percentual decrease is given by

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d(%) = [ (3.40 - 3.90) / 3.90 ] * 100 %

d(%) = [ - 0.50 / 3.90 ] * 100 %

d(%) = - 0.128 * 100 %

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So the price fell 12.8 % approximately.


I hope this helps. =)

4 0
3 years ago
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Since the answer is in hours instead of minutes, we multiply 12 by 60 to get 720 mph

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3 years ago
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I hope this helps you




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3 years ago
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5 0
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