3 years ago

2x^3y + 18xy - 10x^2y - 90y Part A: Rewrite the expression so that the GCF is factored completely. (3 points)

Mathematics

1 answer:

Verizon [17]3 years ago

4 0

2y(x3+9x-10x2-45) not much to be taken as a common factor

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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:

$4x^2-3x+9=2x+1$

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:

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

Hence, the value of x is:

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

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2 years ago

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PLEASE HELP ME!!!!<br><br> Given f(x) = 2x + 3 and<br> g(x) = 2 ^ x <br> What is f(3) - g(4) ?

valentinak56 [21]

Answer:

-7

Step-by-step explanation:

f(3) = 2(3)+3 = 9

g(4) = 2^4 = 16

9 - 16 = -7

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Rachel walks to a friends house then to the store then back home. the distance from Rachel’s house to her friends house is 1 5/6

ryzh [129]

Answer:

11/12 miles hope this helps :)

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The volume of a pyramid that fits exactly inside a cube is 49 cubic feet. what is the volume of the cube?

8090 [49]

The volume of a pyramid is 1/3 the volume of the cube mentioned in the question since it fits exactly inside it. So multiply 49*3 = 147 cubic feet

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3 years ago

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xxMikexx [17]

Answer:

$8.50

Step-by-step explanation:

$8.50 x 18% = $1.53

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2 years ago