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3 years ago

7

About 13 out of 20 homes have a personal computer at On a STREET with 60 homes how many would you expect to have a personal comp

uter

1 answer:

kirza4 [7]3 years ago

3 0

39

So 13-20 Is 26-40 Which makes 49-60

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Marking as brainliest

n200080 [17]

Answer:18

Step-by-step explanation:

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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:

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

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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3 years ago

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What is the smallest power of ten that would exceed 987654321098765432

Romashka [77]

10 to the power of 18

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3 years ago

Transform the following formulas as indicated.

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Is there a problem equation?

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3 years ago

in a bag of containing 32 white marbels, 18 blue marbels and 10 red marbels , if it take one randomly , change of getting the bl

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18/60 which is equal to 3/10

So you just need to put it into proportions which is blue to total. The total is 60 and there is 18 blue. Then you only need to simplify.

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3 years ago

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