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padilas [110]
3 years ago
5

How can you tell if a number is devisible by 3?

Mathematics
2 answers:
Sunny_sXe [5.5K]3 years ago
6 0

Answer:

Add all the digits.

If the sum of digits is a multiple of 3, the number is too

AnnyKZ [126]3 years ago
6 0

Answer: Add up the digits of the number and if it is 9 it can be divided by three.

Step-by-step explanation:

It works

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5 (u + 1) -<br>7 = 3<br>3 (u - 1) + 2u​
frez [133]

Correct Question:

5 (u + 1) - 7  = 3 (u - 1) + 2u.

Solve for u

Answer:

See explanation below

Step-by-step explanation:

In this given question, we are required to find u.

Given the equation:

5 (u + 1) - 7 = 3 (u - 1) + 2u​

Required:

Solve for u

To find u, first simplify both sides individually.

Simply 5 (u + 1) - 7:

Expand the parenthesis:

5u + 5 - 7

Collect like terms:

5u - 2

<em>Simplify 3 (u - 1) + 2u​:</em>

Expand the parenthesis:

3u - 3 + 2u

Collect like terms:

3u + 2u - 3

5u - 3

Bring both simplified equations together:

5u - 2 = 5u - 3

5u - 5u - 2 = -3

-2 = -3

Since -2 ≠ -3, there is no solution.

Therefore, we can say the equation is invalid.

3 0
3 years ago
Without actually carrying out the steps of multiplication, determine whether the product of 15.1 and 0.9 will be larger or small
yan [13]

Answer: Smaller

Step-by-step explanation: The product of 15.1 and 0.9 will be smaller than 15.1. This is because 0.9 is smaller than 1 and since 15.1 * 1 is 15.1, we know that anything smaller than 1 will result in the product of it and 15.1 being smaller.

Would appreciate brainly <3

7 0
2 years ago
Read 2 more answers
Classify the following triangle. check all that apply
Vsevolod [243]

Answer is acute and scalene

This triangle is acute since all angles (51, 79, 70) are all less than 90 degrees. It is a scalene triangle as well since none of the sides (10, 12.1 , 11) are equal to each other.

Here are the other definitions to help you in the future

equilateral- All sides are the same. Right - Has one right angle. Obtuse - Has an angle more than 90 degrees. Isosceles - Only two sides are the same. One is different.

5 0
3 years ago
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Aleksandr-060686 [28]
3xy(x+4)(2y+7)(xy+1) is what I got
4 0
3 years ago
Solve for x. 3x+2 = 8x-1
Flauer [41]
So, your problem is ((3x+2))/4) = ((8x-1)/5)?

If so, X= 14/17
6 0
3 years ago
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