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3 years ago

5

How do you solve sarah is twice as old as her youngest brother. if the difference between their ages is 15 years. how old is her

youngest brother?

1 answer:

marishachu [46]3 years ago

3 0

The youngest brother is 15 years old

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What is the value of d to the nearest tenth?

Ghella [55]

Answer: $d=13.8$

Step-by-step explanation:

A line that cuts a circle at two points is called "secant".

There is a theorem known as "Intersecting Secant Theorem". This is the theorem you need to use to find the value of "d".

According the Intersecting Secant Theorem:

$(14)(14+20)=(16)(16+d)\\(14)(34)=(16)(16+d)$

Having this expression, the next step is to solve for "d":

Use Distributive property:

$476=256+16d$

Subtract 256 from both sides:

$476-256=-256+256+16d$

$220=16d$

Divide both sides by 16:

$\frac{220}{16}=\frac{16d}{16}\\\\13.75=d$

The value of "d" rounded to the nearest tenth is:

$d=13.8$

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Hun, nothing is attatched. Try to attach something or tell me the problem? I'll try and answer it..

Have a fantasic day/night!

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