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12345 [234]
3 years ago
6

Are the expressions 81xy/3x and 9xy equivalent

Mathematics
1 answer:
GrogVix [38]3 years ago
5 0
<span>The expression 81xy/3x and 9xy , divide it by 3 & cancel out 3x/3x to get 27y. 27y does not equal 9xy, so the expressions are not equivalent</span>
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State restrictions on the variable.
Mandarinka [93]
There's one unforgivable taboo that transcends just about every branch of mathematics, and that's dividing by zero. Division by zero is undefined, so any fraction with a zero in its denominator is by definition absurd. For what values of x would the denominators on either of those fractions be zero? Those will define the restrictions on your variable.
7 0
3 years ago
Substitute for x+2y=12 and x=y-12<br><br> PLEASE HELP !
yan [13]

Answer:

x = -4, y = 8

Step-by-step explanation:

y - 12 + 2y = 12

=> 3y = 24

=> y = 8

x = 8 - 12

=> x = -4

7 0
2 years ago
Read 2 more answers
Please answer 10 point + brainlyest = 1 big thank u
solmaris [256]

<em><u>Step-by-step explanation:</u></em>

FIRST, we want to understand every property:

Associative Property: The associative property states that you can add or multiply regardless of how the numbers are grouped so (5 + 4) + 3 = 5 + (4 + 3)

Commutative Property: Commutative is the one that refers to moving stuff around so 3 + 2 = 2 + 3

Additive Inverse Property: This is the number that when added to the original number, equals 0 or it's the opposite of the number so 5 <- is the original number and -5 <- is the additive inverse.

Simplify: Is just to add like terms, and make the equation the simplest.

1. ORIGINAL EXPRESSION

2. Additive Inverse Property

3. Commutative property

4. Associative Property

5. Simplify

6. Simplify

8 0
2 years ago
Fing Using Addil
Alexxx [7]

Answer:

keiko- x

imelda- x+ 36

Sarah- x- 38

Step-by-step explanation:

  1. keiko is x since we have not been given his number of boxes.
  2. because imelda's number of boxes was 36 <em>more </em><em>than </em>keiko's, you will add the x which is for keiko and 36 for imelda(x+36).
  3. and sarah's number of boxes will be x-36 because we have been told her number of boxes is 38 <em>fewer </em><em>than </em> keiko's.
7 0
2 years ago
An unfair die is twice as likely to roll an even number than an odd number. what is the probability of it rolling an odd number?
Anarel [89]
The probability is always expressed as a part of the whole. So, it can be in terms of fraction or percentage. The numerator is the number of possible events while the denominator is the number of total events. Let x be the number of times you roll an odd number. So, the number of times you roll an even number would be 2x. The total rolls would then be x + 2x. Thus, the probability of rolling an odd number is

Probability = x/(2x + x) = x/3x = 1/3


3 0
2 years ago
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