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anzhelika [568]
3 years ago
13

Find the sum of all three digit numbers which are multiples of 9 asap.​

Mathematics
1 answer:
AveGali [126]3 years ago
5 0

Now we will find the largest 3-digit number that is a multiple of 9. The largest 3 digit number is 999, we can see that 999 is divisible by 9 because it satisfies the divisibility rule for 9. The sum of digits of 999 is 27 and 27 is divisible by 9.

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What is the rule when you multiply several factors together? an even number of negative signs will result in
IrinaVladis [17]
⓵
When multiplying several factors together, an even number of negative signs will result in a positive answer.

↠ Because when you multiply two negative signs together, the negative signs turn into a positive sign, giving you a positive answer.

↠ If you have an even number of negative signs to multiply, then all your negative signs will be turned into positive signs, giving you a positive answer!

⓶
When multiplying several factors together, an odd number of negative signs will result in a negative answer.

↠ Because when you multiply a negative sign by a positive sign, the negative sign always wins, giving you a negative answer.

↠ If you har an odd number of negative signs to multiply, this means that once you are done multiplying all of the negative signs together except for the last one, you will be multiplying a positive sign with a negative sign.

↠ Here’s another way to see it : if you have 5 negative signs to multiply together, you will start by multiplying the first 2, which will give you a positive result. Then you will multiply the third and the fourth negative signs together, which will also give you a positive result. By that time, you will have two positive signs and one negative sign left, which means you will have no choice but to multiply a positive sign by the last negative sign, resulting in a negative answer!

I hope this helps! If you need a visual example, just tell me, it will be my pleasure! ☻
4 0
3 years ago
What is the measurement of angle B
Liono4ka [1.6K]
Angles B and D are congruent so:

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6 0
3 years ago
Read 2 more answers
Could someone help me please?
fenix001 [56]

Answer:

a. 7.2

b. 6

Step-by-step explanation:

Since the side lengths of similar polygons are proportional to each other, therefore:

\frac{b}{10} = \frac{9}{15} = \frac{a}{12}

Thus, let's find b using:

\frac{b}{10} = \frac{9}{15}

Cross multiply

b*15 = 10*9

15b = 90

Divide both sides by 15

b = 6

Let's find a using:

\frac{9}{15} = \frac{a}{12}

Cross multiply

9*12 = 15*a

108 = 15a

Divide both sides by 15

a = 7.2

5 0
3 years ago
What is the slope of the line shown?<br> Answers <br> A: 3<br> B:2<br> C:1/2<br> D:-3
satela [25.4K]

Answer:

-3

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which expression is equivalent to 1/4y − 1/2
const2013 [10]
Y - 2 / 4

I don't really know how to explain it, but y - 2 / 4 is equivalent to 1/4y - 1/2
6 0
3 years ago
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