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3 years ago

5.Find the sum of all two - digit natural numbers which are divisible by 3.

Mathematics

1 answer:

kykrilka [37]3 years ago

3 0

Answer:

1665

Step-by-step explanation:

This is AP, where:

First term is: 12= 3*4
Last term is: 99= 3*33
Common difference is: 3
Number of terms is: 33- 3= 30 (because the 4th term is included)

S=1/2*30(12+99)= 1665

The sum of all two - digit natural numbers which are divisible by 3 is 1665

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Which equation is equivalent to StartRoot x EndRoot + 11 = 15?

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The equivalent expression of $\sqrt x + 11 = 15$ is $\sqrt x = 15 - 11$

<h3>How to determine the equivalent expression?</h3>

The complete question is in the attached image

The expression is given as:

$\sqrt x + 11 = 15$

Subtract 11 from both sides of the equation

$\sqrt x + 11 - 11= 15 - 11$

This gives

$\sqrt x = 15 - 11$

Hence, the equivalent expression of $\sqrt x + 11 = 15$ is $\sqrt x = 15 - 11$

Read more about equivalent expression at:

brainly.com/question/4344214

#SPJ1

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2 years ago

5.Find the sum of all two - digit natural numbers which are divisible by 3.​

5.Find the sum of all two - digit natural numbers which are divisible by 3.