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SVETLANKA909090 [29]
3 years ago
6

Mrs.Canales class is selling frozen pizzas to earn money for a field trip. For every pizza sold, the class makes $5.35. They hav

e already earned $182.90 toward their $750 goal. how many more pizzas must they sell to earn $750?
how do you solve this algebraically? And can you please go through the steps you went through to get your answer? Thank you so much for all help.
Mathematics
1 answer:
mafiozo [28]3 years ago
3 0
They still have to earn:
$750 - $182.9 = $567.1
and if they make $5.35 for every pizza sold:
$567.1 : $5.35 = 106
Answer:
They must sell 106 pizzas more. 
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3 years ago
Using the quadratic formula to solve 4x2 – 3x + 9 = 2x + 1, what are the values of x?
yaroslaw [1]

Answer:

The value of x is:

x=\dfrac{5\pm \sqrt{103}i}{8}

Step-by-step explanation:

we have to use the quadratic formula to solve for x.

The equation is given as:

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which could also be written as:

4x^2-3x+9-2x-1=0\\\\4x^2-3x-2x+9-1=0\\\\\\4x^2-5x+8=0

The quadratic formula for the quadratic equation of the type:

ax^2+bx+c=0 is given as:

x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

Here we have:

a=4, b=-5 and c=8.

Hence, by the quadratic formula we have:

x=\dfrac{-(-5)\pm \sqrt{(-5)^2-4\times 8\times 4}}{2\times 4}\\\\x=\dfrac{5\pm \sqrt{25-128}}{8}\\\\\\x=\dfrac{5\pm \sqrt{103}i}{8}

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Read 2 more answers
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