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Bumek [7]
2 years ago
6

Which of these numbers: 3, 4, 18, 111, 123, 340, 345, 456, 555 ... Are multiples of 3, but not multiples of 9? ​

Mathematics
2 answers:
Stella [2.4K]2 years ago
3 0

Answer:

555,3, 111, 123, 345, 456

mamaluj [8]2 years ago
3 0
Numbers 3, 111, 123, 345, 456 and 555 are multiples of 3 but not 9.
Divisibility rule of 3 = The sum of digits should be divisible by 3

Example : 123 / 3 = (1 + 2 + 3) / 3 = 6/3
Therefore 123 is divisible by 3 because 6 is divisible by 3

Divisibility rule of 9 = Sum of digits should be divisible by 9

Example 135 / 9 = (1 + 3 + 5) / 9 = 9 / 9
Therefore 135 is divisible by 9 because 9 is divisible by 9

Hope this helps
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What is the quotient and the remainder for <br> 52 divided by 8
Marianna [84]
52/8 = 6 
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52-48 = 4

So 52 = 6*8+4

The quotient is 6, the remainder is 4.
5 0
3 years ago
Which expression is equal to...
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3 0
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what is the polynomial function of lowest degree with leading coefficient of 1 and roots 2 and 1 + square root2
Marta_Voda [28]
If the roots to such a polynomial are 2 and 1+\sqrt2, then we can write it as

(x-2)(x-(1+\sqrt2))

courtesy of the fundamental theorem of algebra. Now expanding yields

(x-2)(x-1-\sqrt2)=x^2-2x-(1+\sqrt2)x+2(1+\sqrt2)=x^2-(3+\sqrt2)x+2+2\sqrt2

which would be the correct answer, but clearly this option is not listed. Which is silly, because none of the offered solutions are *the* polynomial of lowest degree and leading coefficient 1.

So this makes me think you're expected to increase the multiplicity of one of the given roots, or you're expected to pull another root out of thin air. Judging by the choices, I think it's the latter, and that you're somehow supposed to know to use 1-\sqrt2 as a root. In this case, that would make our polynomial

(x-2)(x-(1+\sqrt2))(x-(1-\sqrt2))=x^3-4x^2+3x+2

so that the answer is (probably) the third choice.

Whoever originally wrote this question should reevaluate their word choice...
5 0
2 years ago
Please simplify with a explanation!~
PilotLPTM [1.2K]

Answer:

-4y + 20

Step-by-step explanation:

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What we need to do here is get rid of the parentheses, which can be achieved through multiplication.

This is another way of saying 4 times -y plus 4 times 5.

Let's break the the parentheses down into 2 separate formulas.

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6 0
3 years ago
Geometry...halp QwQ......
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