Find the measure of arc DB.

Mathematics

1 answer:

mafiozo [28]3 years ago

4 0

ñ!

$.30261 {23680x}^{?}$

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olga2289 [7]

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3 0

4 years ago

What is the value of x?<br> Please show the steps

nordsb [41]

Let D be the endpoint of the angle bisector opposite A on lying on side BC. The angle bisector theorem states that the ratio of BD to CD is equal to the ratio of AB to AC. In this case, you have

$\dfrac{2x-1}{3x}=\dfrac9{15}$

(This is the same equation that you have, it's just rearranged.)

Multiply both sides by $3x$ and 15.

$15\times3x\times\dfrac{2x-1}{3x}=15\times3x\times\dfrac9{15}$
$15(2x-1)=3x\times9$

Now you can solve for $x$ .

$30x-15=27x$
$3x=15$
$x=5$

6 0

3 years ago

Find all values of the variable

labwork [276]

The values of x for which the rational expression is undefined are -6 and -8.

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We have a rational function:

$\rm f(x) = \dfrac{3x+20}{x^2+14x+48}$