3 years ago

What is x-2a when a=3 and x=-3

Mathematics

1 answer:

Softa [21]3 years ago

7 0

Answer:its 3

Step-by-step explanation:

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Which expression is equivalent to 7x + 4x2 – 5x?

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Answer:

2x+8

Step-by-step explanation:

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astraxan [27]

Answer: 2(−x+y=−2)

2(−x+y=−2)

1(2x−3y=4)

Becomes:

−2x+2y=−4

2x−3y=4

Add these equations to eliminate x:

−y=0

Then solve−y=0for y:

−y=0

−y/-1 = 0/-1 (Divide both sides by -1)

y=0

Step-by-step explanation:

Now that we've found y let's plug it back in to solve for x.

Write down an original equation:

−x+y=−2

Substitute 0 for y in −x+y=−2:

−x+0=−2

−x=−2(Simplify both sides of the equation)

−x/-1 = -2/-2 (Divide both sides by -1)

x=2

Answer:

x=2 and y=0

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Solve the equation 9%-6.375. Answer in fractions.

IRINA_888 [86]

Answer: -6 $\frac{57}{200}$

Step-by-step explanation:

9% = .09

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6.285 = 6.285/1 = 62.85/10 = 628.5/100 = 6285/1000

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-6 $\frac{57}{200}$

-6.285 = -6 $\frac{57}{200}$

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