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Paladinen [302]
3 years ago
11

Which expressions are equivalent to 12r - 5?

Mathematics
1 answer:
melamori03 [73]3 years ago
6 0

Answer:

Any real number can substitute for <em>r</em>, because there is not equal sign. As for expressions equivalent to 12r - 5, here are some:

3(4)<em>r</em> - 5

(6 + 6)<em>r</em> - (2^2 + 1)

(24 * 1/2)<em>r </em>+ (-5)

The point is, there are countless expressions to represent 12r - 5

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HELP ASAP IM BEGGING U
cupoosta [38]
I think you are correct
5 0
2 years ago
(2x^3+6x-1)+(3x^2-7x)
sattari [20]

For this case we must simplify the following expression:

(2x ^ 3 + 6x-1) + (3x ^ 2-7x)

We eliminate the parentheses taking into account that:

+ * + = +\\+ * - = -

So, we have:

2x ^ 3 + 6x-1 + 3x ^ 2-7x =

We add similar terms taking into account that:

Different signs are subtracted and the sign of the major is placed:

2x ^ 3 + 3x^2-x-1

Answer:

2x ^ 3 + 3x^2-x-1

7 0
2 years ago
The sum of 237 and six times the opposite of a number is 405. What is the number?
Bond [772]

Answer:

(A) x=-28

Step-by-step explanation:

237 -6x = 405           [note that 6*(-x) is (-6x)]

  -6x = 168           [subtract 237 from both sides]

   x = -28             [divide both sides by (-6)]

6 0
2 years ago
Why is it not possible to know the exact value of an irrational number?
Firdavs [7]

Answer:

An irrational number has a repeating decimal digits that continues on infinitely

Step-by-step explanation:

6 0
3 years ago
Can someone help me understand how to create 3 proofs
Katarina [22]

Step-by-step explanation:

If I'm understanding what a "proof" means, some answers could be:

2 + 3 = 5

4 + 15 = 19

8 + 21 = 29

Hope this helps you! Have a good night!


7 0
3 years ago
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