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Veronika [31]
3 years ago
13

How do you solve 5x - 5y = ?

Mathematics
1 answer:
Softa [21]3 years ago
8 0

Answer:

X=Y

Step-by-step explanation:

5x-5Y=

  +5y=5y

5x=5y

divide both sides by 5

x=y

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Which of the following is the best estimate for 31% of 9? *GIVING 99 Points!*
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Hello! So, when you know your fractions and percents, you know that about 33% equals 1/3. 31 is close to 33, so the best estimate for 31% of 9 is 3. When you solve it on a calculator, 9 * 31% (0.31) is 2.79, which rounds off to 3 when rounded to the nearest whole number. The answer is B: 3.
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3 years ago
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How many three digit numbers have digits whose sum is greater than 2?
LenaWriter [7]

Answer:

896

Step-by-step explanation:

Let's talk first about how many 3 digit numbers there are. The first 3 digit number is 100 and the last is 999. So there are 999-100+1 numbers that are 3 digits long. That simplifies to 900.

Now let's find how many of those have a sum for the digits being 1, then 2 ? Then take that sum away from the 900 to see how many 3 digit numbers have the sum of their digits being more than 2.

3 digit numbers with sum of 1:

The first and only number is 100 since 1+0+0=1.

We can't include 010 or 001 because these aren't really three digits long.

3 digit numbers with sum of 2:

The first number is 101 since 1+0+1=2.

The second number is 110 since 1+1+0=2.

The third number is 200 since 2+0+0=2.

That's the last of those. We could only use 0,1, and 2 here.... Anything with a 3 in it would give us something larger than or equal to 3.

So there are 900-1-3 numbers who are 3 digits long and whose sum of digits is greater than 2.

This answer simplifies to 896.

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3 years ago
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I can't figure this out. help meeee
gogolik [260]
3*5=15 15*8=120 Answer: 120m
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bogdanovich [222]

Answer:

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Step-by-step explanation:

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