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3 years ago

Look for a pattern and complete the conjecture.

Mathematics

2 answers:

denis-greek [22]3 years ago

4 0

Answer:

390

Step-by-step explanation:

The formula of sum of arithmetic sequence is $\frac{n}{2} (a+Tn)$

The number of this series are 2, 4, 6, 8, 10, 12, . . . . , 60.

The first term ( a ) = 2

The 30th even number is 60

The Tn is the term of the sequence

So the equation is

30/2 x ( 2 + $T_{30}$ )

$T_{30}$ = 60

30/2 x ( 2 + 60 )

30/2 x (62)

1860/2

390

ale4655 [162]3 years ago

4 0

390 is the answer to the problem

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HACTEHA [7]

Answer:

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not sure if this is right; it should be though

Step-by-step explanation:

2.1(0) - (1+2(0))= 5.3

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dusya [7]

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tigry1 [53]

Answer:

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Step-by-step explanation:

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3 years ago

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The length of the hypotenuse of a 30-60 -90 triangle is 14 units. what is the length of the short leg

kifflom [539]

Recall that the short leg is the side opposite the 30 degrees angle. And the ratio of the short leg to the hypotenuse is 1:2.

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