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emmainna [20.7K]
3 years ago
6

When 2 times a number is increased by 9 the answer is the same as when 30 is decreased by the number

Mathematics
2 answers:
galben [10]3 years ago
8 0

Answer:

(2*n)+9=n-30

Step-by-step explanation:

I'm not sure but I think that is the equation

Oduvanchick [21]3 years ago
4 0

Answer:

The number is 7.

Step-by-step explanation:

Write out the equation.

2x+9=30-x

Move the variable, x, so both variables are on one side of the equation.

2x+9=30-x

+x +x

Subtract 9 on both sides to combine like terms.

3x+9=30

-9 -9

Divide by 3 on both sides to isolate the variable.

3x=21

3x/3=21/3

x=7

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How can you solve problems by ordering rational numbers from least to greatest?
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Answer:

B same form

Step-by-step explanation:

By using them for fractions or decimals. You can compare fractions by having them from least to greatest and it helps in getting the same denominator for fractions.

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. Ron and Annie have $1,239.45 in their checking account. During the week Annie goes to an ATM and
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Calculate the length of the line segment. round your answer to the nearest tenth.
Sunny_sXe [5.5K]

Answer:

c) 8.6

Step-by-step explanation:

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√(x₁ - x₂)² + (y₁ - y₂)²

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8 0
3 years ago
jay will make $240 doing yard work for 6 weeks. he is saving his money to buy camping equipment that cost $400. He has already s
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5 0
3 years ago
The following table shows the salary of 7 people in an office last year.
kotegsom [21]

Answer:

a.  £24,714.29

b. £16,833.33

Step-by-step explanation:

The calculation of mean income is given below:-

Mean income = Total addition of salaries ÷ Number of workers

= £9,500 + £25,000 + £13,250 + £72,000 + £12,750 + £29,500 + £11,000

= £173,000 ÷ 7

= £24,714.29

Now,

the Mean income excluding Deva's salary:

= Formula of Mean income

= Total addition of salaries excluding Deva salary ÷ Number of workers

= (£9,500 + £25,000 + £13,250 + £12,750 + £29,500 + £11,000) ÷ 6

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3 years ago
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