3 years ago

Calculate the area of the red triangle to find the area of the garden. Show your work

Mathematics

2 answers:

JulsSmile [24]3 years ago

5 0

Answer:

150 feet

Step-by-step explanation:

sergeinik [125]3 years ago

4 0

Answer:

Area of red triangle =1/2 ×side a*side b

=½×90×120=5400ft²

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ANSWER

$S_5=91\frac{10}{81}$

EXPLANATION

The sum of the first $n$ terms of a geometric sequence is given by;

$S_n=\frac{a_1(1-r^n)}{1-r} ,-1$

Where $n$ , is the number of terms and $a_1$ is the first term.

When $n=5$ , we have $a_1=81$ , we get;

$S_5=\frac{81(1-(\frac{1}{9})^5)}{1-\frac{1}{9}}$

$S_5=\frac{81(1-\frac{1}{59049})}{1-\frac{1}{9}}$

$S_5=\frac{81(\frac{59048}{59049})}{\frac{8}{9}}$

$S_5=\frac{7381}{81}$

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