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Dmitrij [34]
3 years ago
9

Write an equation of each line in standard form with integer coefficients. y=4.2x+1.8

Mathematics
1 answer:
Firlakuza [10]3 years ago
3 0

Answer:   -21x + 5y = 9

Step-by-step explanation:

The standard form says that  Ax + By=C  

So to covert y = 4.2x + 1.8 into  subtract 4.2 from both sides.

    y = 4.2x + 1.8

-4.2x   -4.2x

-4.2x + 1y = 1.8       Now it is written in standard form and to make the decimals integers we will multiply both sides by 10.

-4.2x(10) + 1y(10) = 1.8(10)

-42x + 10y = 18  which reduces to -21x + 5y = 9

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PLEASE HELP!!!!!!!!
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Answer:

2π - 4√5

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Step-by-step explanation:

√(2π - 4√5)^2

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If you want an approximate value it is

-2.66 to the nearest hundredth

7 0
2 years ago
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5 0
3 years ago
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Dahasolnce [82]

Answer:

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Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Solve the equation <br> |x-3| -10=-5
Deffense [45]

Answer:

x=8                     x=-2

Step-by-step explanation:

|x-3| -10=-5

Add 10 to each side

|x-3| -10+10=-5+10

|x-3| =5

Now separate into two equations , one positive and one negative

x-3 = 5           x-3 = -5

Add 3 to each side

x-3+3 = 5+3    x-3+3 = -5 +3

x=8                     x=-2

5 0
3 years ago
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Sam decides to build a square garden. If the area of the garden is 25x2 + 30x + 9 square feet, what is the length of one side of
seropon [69]
The correct answer is C. (5x+3) feet, and here is how I got it.
This is the equation you need to use:
(a+b)^2 = (a+b) (a+b)
So, let us plug in 5x and 3 here:
(5x+3)^2 = (5x+3)(5x+3) = 25x^2 + 15x + 15x + 9 = 25x^2 + 30x + 9 which is the area of the garden. 
5 0
3 years ago
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