3 years ago

What is the area of the trapezoid shown ?

Mathematics

1 answer:

Irina18 [472]3 years ago

5 0

Answer:

A = 1/2 * (a + c) * h

A = 1/2 * (6 + (2 + 6 + 2)) * 6 = 48

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Determine if the sequence is arithmetic. If it is, find the common difference. Is the sequence a function ?

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$\r=\dfrac{a_{n+1}}{a_n}\\\\r=\dfrac{a_2}{a_1}=\dfrac{a_3}{a_2}=\dfrac{a_4}{a_3}=...\\\\8.)\\a_1=4;\ a_2=20;\ a_3=100;\ a_4=500\\\\r=\dfrac{20}{4}=\dfrac{100}{20}=\dfrac{500}{100}=5\\\\10.)\\a_1-30;\ a_2=-45;\ a_3=-50;\ a_4=-65\\\\\dfrac{a_2}{a_1}=\dfrac{-45}{-30}=\dfrac{3}{2}\\\\\dfrac{a_3}{a_2}=\dfrac{-50}{-45}=\dfrac{10}{9}\\\\\dfrac{a_2}{a_1}\neq\dfrac{a_3}{a_2}\\\\\text{It's not a geometric sequence}$
$12.)\\a_1=-7;\ a_2=-14;\ a_3=-21;\ a_4=-28\\\\\dfrac{a_2}{a_1}=\dfrac{-14}{-7}=2\\\\\dfrac{a_3}{a_2}=\dfrac{-21}{-14}=\dfrac{3}{2}\\\\\dfrac{a_2}{a_1}\neq\dfrac{a_3}{a_2}\\\\\text{It's not a geometric sequence}\\\\\text{It's a function}$

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3 years ago

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The attached figure reprsents a prove that a rectangle has congruent diagonals.

<u>Given:</u> rectangle ABCD

<u>Prove:</u> BD ≅ AC

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The Arno family is planning a 14 day April vacation. The location they've chosen has an average of 10 rainy days every April. Th

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Grant is painting a rectangular board that has a width of į foot. He has enough

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