3 years ago

How many sets of parallel lines in a trapazoid

Mathematics

2 answers:

Natasha_Volkova [10]3 years ago

5 0

Two. <span>The top and bottom are parallel to each other, as are the two sides.</span>

mr_godi [17]3 years ago

4 0

Actually, there is only one set of parallel lines on a trapezoid.

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3 years ago

Find a1 if Sn = 89,800, r = 3.4, and n = 10. Round to the nearest hundredth if necessary.

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Answer:

$a_1=1.04$

Step-by-step explanation:

We have a geometric sequence with:

$Sn = 89,800$ , $r = 3.4$ , and $n = 10$

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r is the common ratio

$a_1$ is the first term in the sequence

n is the number of terms in the sequence

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Then:

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Now we solve for $a_1$

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$a_1=\frac{89,800(1-3.4)}{1-(3.4)^{10}}\\\\a_1=1.04$

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Step-by-step explanation:

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