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Gemiola [76]
3 years ago
11

What is 2r+7+r=? I'm not sure

Mathematics
2 answers:
Alexus [3.1K]3 years ago
7 0
2r + 7 + r = ?

Combine like terms.

(2r + r) + 7 

Simplify.

3r + 7 

~Hope I helped!~
marissa [1.9K]3 years ago
5 0
3r+7 I think...........
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Using the order of operation which should be done first to evaluate 6+(-5-7)/2-8(3)?
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Answer:

\frac{3}{11}

Step-by-step explanation:

=> \frac{6+(-5-7)}{2-8(3)}

=> \frac{6+(-12)}{2-24}

=> \frac{6-12}{-22}

=> \frac{-6}{-22}

=> \frac{3}{11}

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2 years ago
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Set f(x)=2x^3-3x^2+2. Find the tangent line \ell_1(x) to f(x) at the point when x=x_1:

f'(x)=6x^2-6x\implies f'(x_1)=12 (slope of \ell_1)

\implies\ell_1(x)=12(x-x_1)+f(x_1)=12(x+1)-3=12x+9

Set x_2=-\dfrac9{12}, the root of \ell_1(x). The tangent line \ell_2(x) to f(x) at x=x_2 has slope and thus equation

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The roots of a quadratic equation depend on the values of the coefficients.<br><br> True<br> False
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Answer:

True

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Therefore it is true that, the roots of a quadratic equation depend on the values of the coefficients.

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