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3 years ago

9

PLEASE HELP!!!! How do I show the work to find the area of this composite figure. The answer is 81.8km I just don’t know how to

show the work.

1 answer:

Ket [755]3 years ago

6 0

(area of the half-cirlce) + (area of the triange) + (area of the rectangle) + (area of biggest triangle) + (area of 2 congruent trianges)

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AB = BC, BC = CD, so AB = CD. Which property allows us to make this conclusion?

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?

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3 years ago

In the arithmetic sequence, -12, -17, -22, -27... which term has a value of -68?

RSB [31]

Answer:

-68 is not a term in the given sequence

Step-by-step explanation:

The given sequence is -12, -17, -22, -27...

There is a common difference of d=-17--12=-5

The explicit rule for this sequence is $f(n)=-12-5(n-1)$

Or $f(n)=-5n-7$

To find the term that has a value of -68 we equate the explicit formula and solve for n.

$-68=-5n-7$

$\implies -68+7=-5n$

$\implies -61=-5n$

$n=\frac{61}{5} =12.2$

The position should be a natural number.

Since n is a decimal, it tells us that -68 is not a term in the given sequence

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3 years ago