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Dmitrij [34]
3 years ago
5

19= 7a + 7 -2 what is the and to this need help ASAP

Mathematics
2 answers:
____ [38]3 years ago
8 0

Answer:

a = 2

Step-by-step explanation:

19= 7a +5

19-5=7a

14÷7=a

a=2

professor190 [17]3 years ago
7 0

Answer:

19=7a + 7 -2 is equal to 2. The answer is 2

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Answer:

12.56m

<h3>4th answer is correct</h3>

Step-by-step explanation:

\frac{180}{360}  \times 2\pi \: r

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3 years ago
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The sum of two numbers is negative fifteen, and one number is five less than the other. Using the variables m and n to represent
Likurg_2 [28]

We need to use the variables m and n to represent both numbers.

Their sum must equal -15. Therefore, we can write the next equation:

m + n = -15

If one number is five less than the other, we need to choose one variable and then we can write it in terms of the other variable. Then:

n = m-5

To find the value for each number, we can replace the n equation on the first equation:

m + n = -15

m + (m-5)= -15

Then:

m + m - 5 = -15

2m -5 = -15

Solve the equation for m:

Add both sides 5 units:

2m - 5 +5 = -15+5

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Divide both sides by 2:

2m/2 = -10/2

m = -5

Finally, replace the m value on the first equation:

m + n = -15

-5 + n = -15

Then, solve the equation for n:

Add both sides by 5:

-5+5 + n = -15 +5

n = -10

Hence, both numbers are m=-5 and n= -10.

The equations separated by a comma are m + n = -15,n = m-5.

The numbers separated by a comma are -5,-10.

6 0
1 year ago
What’s the identity property of addition?
Novosadov [1.4K]

Answer:

Identity property of addition: The sum of 0 and any number is that number. For example, 0 + 4 = 4 0 + 4 = 4 0+4=40, plus, 4, equals, 4.

Step-by-step explanation:

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Answer:

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3 years ago
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siniylev [52]
7-2=5
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