Mathematics: Look at the table. make a conjecture about the sum of the first 15 positive even numbers.

Look at the table. make a conjecture about the

Ответ:

boemeh459

13.03.2022

Be observing the table, we can write the following conjecture:

When adding consecutive even numbers, starting from 2 to

.

Then the sum is equal to:
$\frac{m}{2}( \frac{m}{2} +1)$

Then, the sum of the first 15 positive even numbers (which is the sum of 2 to 30) can be calculated with the previous conjecture by setting m=30

:
$\frac{m}{2}( \frac{m}{2} +1)=\frac{30}{2}( \frac{30}{2} +1)=(15)(16)=240$

The answer is 240.

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Ответ:

evy22

18.05.2021

Mathematics

Step-by-step explanation:

Formula- base x height divided by 2

base-4

height-4

4x4=16

16/2=8

therefore, B is the correct answer

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Look at the table. make a conjecture about the sum of the first 15 positive even numbers.

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