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olganol [36]
3 years ago
12

Factorise 2b squared - 2b

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
4 0
2b^2 - 2b

2b(b - 1) is your answer

hope this helps
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-14x + 15y = 15 <br> -21x - 20y = -10<br> Use substitution to find the x and y coordinates.
denis-greek [22]
                  -14x + 15y = 15
        -14x + 14x + 15y = 14x + 15
                             15y = 14x + 15
                              15           15
                                 y = ¹⁴/₁₅x + 1
                   -21x - 20y = -10
     -21x - 20(¹⁴/₁₅x + 1) = -10
-21x - 20(¹⁴/₁₅x) - 20(1) = -10
         -21x - 18²/₃x - 20 = -10
                  -39²/₃x - 20 = -10
                            + 20  + 20
                          -39²/₃x = 10
                           -39²/₃   -39²/₃
                                   x = ⁻³⁰/₁₁₉
                                   y = ¹⁴/₁₅x + 1
                                   y = ¹⁴/₁₅(⁻³⁰/₁₁₉) + 1
                                   y = ⁻²⁸/₁₁₉ + 1
                                   y = ⁹¹/₁₁₉
                              (x, y) = (⁻³⁰/₁₁₉, ⁹¹/₁₁₉)
8 0
3 years ago
Which expression is not equivalent to the other three? 2x 2 2x 3x – 8 4 7x – 2 –2 5x 2x – 4 8x – x – 6.
erik [133]

The expression is not equivalent to \rm 28x-16.

<h2>Polynomial</h2>

An expression of more than two algebraic terms, basically sums of terms and variables of power n.

<h2>Given</h2>

2x+2 ,\ 2x,\ 3x-8, 4,\ 7x-2,\ -2,\ 5x,\ 2x-4,\ 8x,\ -x-6

<h2>Step by step explanation</h2>

\rm Equivalent\ expression = add\ all\ the\ given\ terms.\\&#10;Equivalent\ expression = 2x+2+2x+3x-8+4+7x-2-2+5x+2x-4+8x-x-6\\&#10;Equivalent\ expression = 2x+2x+3x+7x+5x+2x+8x-x+2-8+4-2-2-4-6\\&#10;Equivalent\ expression = 28x-16\\&#10;

Then the expression is not equivalent to \rm 28x-16.

Thus, the expression is not equivalent to \rm 28x-16.

More about the polynomial link is given below.

brainly.com/question/17822016

7 0
2 years ago
Sara says, "If you subtract 15 from my number and multiply the difference by -7, the result is -133. What is sara's number
Delvig [45]

Answer:

39

Step-by-step explanation:

-133/-7=19+15=39

check:39-15=19

19x(-7)=-133

7 0
3 years ago
What is the slope of the line between (3, −4) and (−2, 1)? (1 point)
stealth61 [152]
-1 will be your answer

rise over run
3-1 = 2
-4 + 1 = -3
2-1 = 1
-3 + 1 = -2


hope this helps
8 0
3 years ago
Is 3x + 2y = 6 a function??
professor190 [17]

Answer:

B :)

Step-by-step explanation:

5 0
3 years ago
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