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r-ruslan [8.4K]
3 years ago
7

Solve the linear equation. X + 5 = -2 ​

Mathematics
2 answers:
Dafna11 [192]3 years ago
8 0
The answer is -7 .......
Vladimir79 [104]3 years ago
7 0

Answer:

x=-7

Step-by-step explanation:

So we have the equation:

x+5=-2

To solve, subtract 5 from both sides. This is the subtraction property of equality:

(x+5)-5=(-2)-5

The left side cancels:

x=(-2)-5

Subtract on the right.

x=-7

So, our answer is -7.

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Prove that every integer greater than 7 can be written by using 3's and 5's only. that is, for every n > 7 there exist non-ne
Taya2010 [7]
An integer may be a multiple of 3.
An integer may be 1 greater than a multiple of 3.
An integer may be 2 greater than a multiple of 3.

It is redundant to say an integer is 3 greater than a multiple of 3 (that's just a multiple of 3, we've got it covered).  Same for 4, 5, 6, 7...

Let's consider a number which is a multiple of 3.  Clearly, we can write 3+3+3+3+... until we reach the number.  It can be written as only 3's.

Let's consider a number which is 2 greater than a multiple of 3.  If we subtract 5 from that number, it'll be a multiple of 3.  That means we can write the number as 5+3+3+3+3+...  Of course, the number must be at least 8.

Let's consider a number which is 1 greater than a multiple of 3.  If we subtract 5 from that number, it'll be 2 greater than a multiple of 3.  If we subtract another 5, it'll be a multiple of 3.  That means we can write the number as 5+5+3+3+3+3+...  Of course, the number must be at least 13.

That's it.  We considered all the numbers.  We forgot 9, 10, 11, and 12, but these are easy peasy.

Beautiful question.
4 0
3 years ago
234/341 in simplest form?
Natali5045456 [20]

Answer:

0.686 (approximately)

Step-by-step explanation:

8 0
2 years ago
Please help anyone.​
Burka [1]

Answer:

- \frac{27}{7}

Step-by-step explanation:

Given

f(x) = \frac{3}{x+2} - \sqrt{x-3}

Evaluate f(19) by substituting x = 19 into f(x)

f(19) = \frac{3}{19+2} - \sqrt{19-3}

       = \frac{3}{21} - \sqrt{16}

       = \frac{1}{7} - 4

       = \frac{1}{7} - \frac{28}{7} = - \frac{27}{7}

7 0
3 years ago
Find the values of the variable
Leno4ka [110]

Answer:

Step-by-step explanation:

a = 180 - 100

= 80 degrees

b = 180 - 80

= 100 degrees

c = 180 - 135

= 45 degrees

8 0
2 years ago
What number is opposite of 56
OLga [1]

Answer:

- 56

Step-by-step explanation:

The opposite of a number is its negative value

Then the opposite of 56 is - 56

4 0
2 years ago
Read 2 more answers
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