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2 years ago

13 143 as a unit fraction

Mathematics

1 answer:

Vanyuwa [196]2 years ago

4 0

Divde 13/143 with 13 = 1/11

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Solve 2x^3+7x^2-2x-1=o

Mashcka [7]

Answer:

$x=\sqrt{3}-2\\x=-\sqrt{3}-2\\x=\frac{1}{2}$

Step-by-step explanation:

This is a hard one

We have to use the rational root theorem

$2x^3+7x^2-2x-1$ = 0

We have to find all the factors of a and d and put them in a fraction

$a=2\\d=-1\\\frac{1}{1,2}$

We then plug them into the equation to see if any of them work

The equation isn't true when plugging 1, but is true when plugging in 1/2

factored form of 1/2 is (2x-1)

Then we divide the original equation by (2x-1) (you can use synthetic division or long division, it would be hard to type out the process for that) to get $x^2+4x+1$

So now the equation is $(2x-1)(x^2+4x+1)$

Solve the second half of this equation using the quadratic formula to get

$\sqrt{3}-2$ and $-\sqrt{3}-2$

We already know the solution for the first half of the equation (1/2)

So the final answers are:

$x=\sqrt{3}-2, -\sqrt{3}-2, \frac{1}{2}$

8 0

3 years ago

A picture is mounted on a frame measuring 25 centimeters by

makvit [3.9K]

Answer:

I think it's 1,125 and 4485

Step-by-step explanation:

25x13x3

115x13x3

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2 years ago

Help pleas sssssssssssssssss

ivolga24 [154]

It’s B thank you can I plz have brainlist plz

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2 years ago

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Two numbers have a sum of 124

andrew-mc [135]

Answer:

78 and 46

Step-by-step explanation:

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3 years ago

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Which line segment is a radius of circle F? A. BE B. AB C. BF D. AC

Anarel [89]

Hello!
I would say the correct answer is C. BF
The definition of a radius is "a straight line from the center to the circumference of a circle or sphere."
I hope this helps :)

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3 years ago

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