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adelina 88 [10]
3 years ago
14

Help please!! will give brainiest :))

Mathematics
2 answers:
jeyben [28]3 years ago
7 0

Answer:

81(x + 2y)(x - 2y)

Step-by-step explanation:

81 {x}^{2}  - 324 {y}^{2}  \\  \\  =  {(9x)}^{2}  -  {(18y)}^{2}  \\  \\  = (9x + 18y)(9x - 18y) \\  \\  = 9(x + 2y) \times 9(x - 2y) \\  \\  = 81(x + 2y)(x - 2y)

Kitty [74]3 years ago
3 0
<h2><u><em /></u></h2><h2><u><em> -98415 is the answer because im smart</em></u></h2>
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Which of the following ordered pairs represents a solution to the equation below?<br> y=-3x – 2
KonstantinChe [14]

Answer:  (-2,-8)

Step-by-step explanation:

For these types of questions they are very easy. The first thing to know is the points. For this case, we will start off with (1,0) The x is 1 and the y is 0 so you plug them in the equation. You will then get 0=3(1)-2. Once you simplify that you will get 0=1 which is wrong. For the correct answer, the formula will look like this..... -8=3(-2)-2 which then simplify to -8=-8 which is true.

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3 years ago
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Which of the following numbers is prime?
UkoKoshka [18]
133 can be divided by 7, so it is not prime.

143 can be divided by 11, so it is not prime.

153 can be divided by 3, so it is not prime.

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Express 0.19494 as a fraction
valentina_108 [34]
19.494
19 <span>247⁄500</span>

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3 0
4 years ago
what is the quotient (65y3 15y2 − 25y) ÷ 5y? a. 13y2 3y − 5 b. 13y3 3y2 − 5y c. 13y2 − 3y 5 d.13y2 − 3y − 5
Aneli [31]

Keywords:

<em>Division, quotient, polynomial, monomial </em>

For this case we must solve a division between a polynomial and a monomial and indicate which is the quotient.

By definition, if we have a division of the form: \frac {a} {b} = c, the quotient is given by "c".

We have the following polynomial:

65y ^ 3 + 15y ^ 2 - 25y that must be divided between monomy5y, then:

C (y) represents the quotient of the division:

C (y) = \frac {65y ^ 3 + 15y ^ 2 - 25y} {5y}

C (y) = \frac {65y ^ 3} {5y} + \frac {15y ^ 2} {5y} - \frac {25y} {5y}

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Thus, the quotient of the division between the polynomial and the monomial is given by:

C (y) = 13y ^ 2 + 3y-5

Answer:

The quotient is: C (y) = 13y ^ 2 + 3y-5

Option: A


4 0
3 years ago
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Which matrix Is the product of a 3x3 identity matrix and the scalar 3
maw [93]

Answer:

  Each diagonal element will be 3. Off-diagonal elements will be zero.

Step-by-step explanation:

The one that looks like ...

  \left[\begin{array}{ccc}3&0&0\\0&3&0\\0&0&3\end{array}\right]

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