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Nataliya [291]
3 years ago
5

I need 7-12 please!!!

Mathematics
1 answer:
sergiy2304 [10]3 years ago
6 0

Answer:

number 7 is y= \frac{-ax+c}{b}

Step-by-step explanation:

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Please help with these 2 answers i only have 10 minutes left
natta225 [31]

Answer:

  1. 1/4 of a pound
  2. 4/15 of the flat

Step-by-step explanation:

For number 1:

  1. 3/4 ÷ 3 = 0.25
  2. 0.25 = 1/4

For number 2:

  1. 4/5 ÷ 3 = 4/15

I hope this helps!

5 0
2 years ago
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Solve the system by substitution.<br> -8x – 7y = -5<br> -x = y
Lapatulllka [165]

Substitute y = -x into the first equation:

-8x - 7(-x) = -5

-8x + 7x = -5

-x = -5

x = 5

Substitute x = 5 into y = -x

y = -(5)

y = -5

Answer: x = 5, y = -5

6 0
3 years ago
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The following lines are parallel.<br> 4x + 2y = 8 and y = 2x + 4<br> True<br> False
Alenkasestr [34]
I believe the answer is True ! Hope this helps you
5 0
3 years ago
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Look at the graph. What is ?
shepuryov [24]

Answer:

no picture.

Step-by-step explanation:

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4 0
2 years ago
Multiply. Check picture.
VashaNatasha [74]

The answer is 3x^4-13x^3-x^2-11x+6.

Solution:

Use algebraic identity: a^m\times a^n=a^{m+n}

For example: x^2\times x=x^{2+1}=x^3

Given expression (x^2-5x+2) and (3x^2+2x+3).

To multiply these equations.

(x^2-5x+2)\times(3x^2+2x+3)

             =x^2(3x^2+2x+3)-5x(3x^2+2x+3)+2(3x^2+2x+3)

             =(3x^4+2x^3+3x^2)+(-15x^3-10x^2-15x)+(6x^2+4x+6)

             =3x^4+2x^3+3x^2-15x^3-10x^2-15x+6x^2+4x+6

Combine like terms together.

             =3x^4+(2x^3-15x^3)+(3x^2-10x^2+6x^2)-15x+4x+6

             =3x^4-13x^3-x^2-11x+6

(x^2-5x+2)\times(3x^2+2x+3)=3x^4-13x^3-x^2-11x+6

Hence the answer is 3x^4-13x^3-x^2-11x+6.

3 0
3 years ago
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