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valentinak56 [21]
3 years ago
8

How do know if you can divide a number by 3. Is there a pattern?

Mathematics
2 answers:
ioda3 years ago
7 0
When you add up the sum of the digits, it should be a multiple of three. 21 is 2 plus 1 equals 3, so since 3 is a multiple of three, 21 is divisible by 3
kvv77 [185]3 years ago
4 0
You can know if the number is divisible by 3 by adding the numbers up. If the sum is dividable by 3 then the original number can be as well. For example, the number 93. 9+3= 12 and 12 can be divided by 3. This means 93 is also divisble by three. If you do divide 93 the quotient is 31.
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Translate this phrase into an algebraic expression.
Alekssandra [29.7K]

Answer:

Step-by-step explanation:

2V - 66

This is just an expression. It is not an equation and it cannot be solved. You are just being asked to set up something that could be used later on.

5 0
4 years ago
Johnny will work 15 hours a week during the 36 week school year, and 40 hours a
Goryan [66]
The answer is B-5,310
4 0
4 years ago
0.000006 write each number in scientific notation
Reika [66]
Well, if you need the number (0.000006) to be more than 1 and less than ten, you need to move the decimal point. So, 0.000006-----> 6.0 and then, how places did you move the decimal to get 6.0 instead of 0.000006? Well, the answer is 6 so if you multiply 6.0*10 to the -6

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Do you need anymore questions answered? 
4 0
4 years ago
The area of a square bedroom is 289 square feet. Determine the perimeter of this bedroom. Show your work.
Lemur [1.5K]

A = 289

That's the side s squared,

s² = 289

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p = s + s + s + s = 4s = 4(17) = 68

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8 0
3 years ago
Find each f(c) using synthetic substitution.
love history [14]

f(3) = 69

Step-by-step explanation:

Given  f(x) =5x5 + 10x4 + 3x3 + 8x2 – 6x – 3; c = 3

f(x) = 25+40+9+16 - 6x - 3

f(x)  = - 6x +90-3

f(x) =  - 6f(3) = 69x + 87

Taken c = 3

f(c) =  - 6c +90-3

f(c) =  - 6c + 87

substitute c=3

f(3) =  - 6 (3) +90-3

     = -18 +87

      = 69

Hence .,f(3) = 69

3 0
3 years ago
Read 2 more answers
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