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3 years ago

Hey can you please help me posted picture of question

Mathematics

2 answers:

kakasveta [241]3 years ago

8 0

We have the following equation:
3x2 + 7x + 4 = 0
Using the resolver we have:
x = (- b +/- root (b2 - 4ac)) / 2a
Substituting values we have:
x = (- (7) +/- root ((7) 2 - 4 (3) (4))) / 2 (3)
Rewriting:
x = (- 7 +/- root (49 - 48)) / 6
x = (- 7 +/- root (1)) / 6
x = (- 7 +/- 1) / 6
The results are:
x = (- 7 + 1) / 6 = -6/6 = -1
x = (- 7 - 1) / 6 = -8 / 6 = -4/3
Answer:
x = -1
x = -4/3
option C and D

labwork [276]3 years ago

3 0

The solutions for the equation, $3x^2+7x+4=0$ are -1 and -4/3.

So, the answer choices are C and D

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Answer:

The manufacturer will have no profit or loss when the selling price equals $200 or $100.

Step-by-step explanation:

The expression to model the monthly profit from sales of a new model of bicycle is

-x^2 + 300x -20,000

Let

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we know that

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Multiply by -1 both sides

$x^{2}-300x+20,000=0$

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

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in this problem we have

$a=1\\b=-300\\c=20,000$

substitute in the formula

$x=\frac{300(+/-)\sqrt{-300^{2}-4(1)(20,000)}}{2(1)}$

$x=\frac{300(+/-)\sqrt{10,000}}{2}$

$x=\frac{300(+/-)100}{2}$

$x=\frac{300(+)100}{2}=200$

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therefore

The manufacturer will have no profit or loss when the selling price equals $200 or $100.

8 0

3 years ago

What is the equation of the line.

Ymorist [56]

Answer:

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3 years ago

The average American man consumes 9.7 grams of sodium each day. Suppose that the sodium consumption of American men is normally

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Answer:

Step-by-step explanation:

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