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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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What does x equal in 4x-9-3.5x-9 ?
Oksi-84 [34.3K]

Answer:

X=0

Step-by-step explanation:

I believe you meant 4x-9=3.5x-9, and I make this assumption due to it being impossible to "solve for x" in the format you gave. The only possibile solution to the question you gave is to simplify it, which would be 0.5x-18.

However, going with what I believe you meant, x would have to equal 0. There's no other possibility besides this, as 0 is the obvious option. Multiplecation by 0 will always produce 0. For 4x-9 AND 3.5x-9 to produce the same value, you'd have to make the variable a number that, when multipled by its coefficient, will produce an identical value. X=0 is the only number that fits this bill.

6 0
4 years ago
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vova2212 [387]

Answer:

I graphed the inequality on the graph below.

Step-by-step explanation:

6x - 5y > 30

-6x         -6x        Subtract 6x from both sides

-5y > -6x + 30    Divide both sides by -5 and flip the inequality sign

y < 6/5x - 6

5 0
4 years ago
What is the value of m in the equation one-half m minus three-fourths n equals 16, when n equals 8? a. 20 b. 32 c. 44 d. 48
Semmy [17]

Answer:

c. 44

Step-by-step explanation:

½m - ¾n = 16

½m - (¾×8) = 16

½m - 6 = 16

½m = 16 + 6

½m = 22

m = 44

4 0
3 years ago
A pie is cut into 12 equal slices. What is the angle of rotation about the center that will map apiece of pie to a piece that is
Law Incorporation [45]

A pie is cut into 12 equal slices.

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1 year ago
If a train travels from Milwaukee to Minneapolis a distance of 337 miles in 5 hours how fast is the train travelling? Write
yawa3891 [41]

Answer:

67.4 mph

distance~337

rate~67.4 mph

time~5 hours

Step-by-step explanation:

hope this helps

7 0
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