2 years ago

What is the slope of this graph? a. 4 b. -4 c. -1/4 d. 1/4

Mathematics

1 answer:

kykrilka [37]2 years ago

6 0

The answer is -4 i just did the test

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What are the solutions of the equation (2x + 3)2 + 8(2x + 3) + 11 = 0

Tom [10]

Answer:

$x=\frac{-7-\sqrt{5}}{2}$ or $x=\frac{-7+ \sqrt{5}}{2}$

Step-by-step explanation:

The given equation is

$(2x+3)^2+8(2x+3)+11=0$

Let us treat this as a quadratic equation in $(2x+3)$ .

where $a=1,b=8,c=11$

The solution is given by the quadratic formula;

$(2x+3)=\frac{-b\pm \sqrt{b^2-4ac} }{2a}$

We substitute these values into the formula to obtain;

$(2x+3)=\frac{-8\pm \sqrt{8^2-4(1)(11)} }{2(1)}$

$(2x+3)=\frac{-8\pm \sqrt{64-44} }{2}$

$(2x+3)=\frac{-8\pm \sqrt{20} }{2}$

$(2x+3)=\frac{-8\pm2\sqrt{5} }{2}$

$(2x+3)=-4\pm \sqrt{5}$

$(2x+3)=-4-\sqrt{5}$ or $(2x+3)=-4+ \sqrt{5}$

$2x=-3-4-\sqrt{5}$ or $2x=-3-4+ \sqrt{5}$

$2x=-7-\sqrt{5}$ or $2x=-7+ \sqrt{5}$

$x=\frac{-7-\sqrt{5}}{2}$ or $x=\frac{-7+ \sqrt{5}}{2}$

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Which one is it A. B. C. or D.

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The answer is C. It says that c(weight) = the cost

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Help! I need an explanation if you answer so maybe I can get the other questions easily☺️

Dmitriy789 [7]

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A line has a rise of 6 and a slope of 1/20. What is the run?

mr Goodwill [35]

Answer:

120

Step-by-step explanation:

Slope = rise / run

1/20 = 6 / run

run = 120

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Answer:

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Step-by-step explanation:

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