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tensa zangetsu [6.8K]
3 years ago
7

Can u help me with 3 and 4

Mathematics
1 answer:
larisa [96]3 years ago
7 0

Answer:

3)

   18:6

   66:22

4)

    1:4

     2:24

Hope this helps! <3

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7. If A = 2x + 3 and B = x^2 - 5x + 1, what is the value of A-5B?​
taurus [48]

Answer:

\huge \boxed{ \boxed{ \tt  - 5 {x}^{2}  + 27 x- 2}}

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • algebra
  • PEMDAS
<h3>given:</h3>
  • A=2x+3
  • B=x²-5x+1
<h3>to find:</h3>
  • A-5B
<h3>let's solve:</h3>

step - 1 : define

A-5B=2x+3-5(x²-5x+1)

step - 2 : solve

  1. distribute -5 to the parentheses:2x+3-5x²+25x-5
  2. rewrite:-5x²+2x+25x-5+3
  3. combine like terms:-5x²+27x-2

and

we are done

7 0
3 years ago
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Answer:

2

Step-by-step explana

 (6x-y+4)*2= 12x -2y+8= (3x+9x)-(2y-8)

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