Mathematics, 16.07.2019 09:00 SunsetPrincess

Consider the following expression 10x^2 + 5x +3

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The true statements are:
The numerator has 3 terms
The denominator includes a coefficient of 2

Explanations:
The true statements are :
The numerator has 3 terms which are { -10x² , 5x and 3}
The denominator includes a coefficient of 2 which is ( 2x²)

The second statement which is (The denominator includes a coefficient of 2)

wrong because the term 4 is a constant and not a coefficient

The fourth statement which is ( The numerator has 2 terms ) is wrong because the The numerator has 3 terms

The last statement which is (The numerator includes a coefficient of 3)

wrong because the term 3 is a constant and not a coefficient

Answer from: christinasmith9633

The true statements are A and C.

Answer from: Quest

Ithink it is correct but just ask someone else but i am sure it it

Answer from: Quest

starting with:

5 + x - 12 = 2x - 7

5 + x - 12 - x = 2x - 7 - x (subtract x from both sides)

5 - 12 = x - 7 (combine and cancel x's from both sides)

5 - 12 + 7 = x - 7 + 7 (add 7 to both sides)

0 = x (add numbers together on both sides)

so in order for the equation to be true, x must be 0.

trying x = -0.5

5 + x - 12 = 2x - 7 (original equation)

5 + -0.5 - 12 = 2(-0.5) - 7 (plug in value of x)

5 + -0.5 - 12 = -1 - 7 (did multiplication)

-7.5 = -8 (did addition on both sides)

since -7.5 is obviously not equal to -8, the value of -0.5 for x is wrong.

trying x = 0

5 + x - 12 = 2x - 7 (original equation)

5 + 0 - 12 = 2(0) - 7 (plug in value of x)

5 + 0 - 12 = 0 - 7 (did multiplication)

-7 = -7 (did addition on both sides)

since -7 equals -7, that demonstrates that the value of 0 for x is correct.

trying x = 1

5 + x - 12 = 2x - 7 (original equation)

5 + 1 - 12 = 2(1) - 7 (plug in value of x)

5 + 1 - 12 = 2 - 7 (did multiplication)

-6 = -5 (did addition on both sides)

since -6 is obviously not equal to -5, the value of 1 for x is wrong.

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Consider the following expression 10x^2 + 5x +3
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