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Misha Larkins [42]
3 years ago
14

Select all expressions that are equivalent to 6x+1-(3x-1).

Mathematics
2 answers:
leva [86]3 years ago
7 0

Answer:

6x+"-" 3x+1+1

3x+2

6x+1+"-" 3x-"-" 1

Step-by-step explanation:

klio [65]3 years ago
3 0

Answer:6x+1-3x-1

negative and negative= positive

3x+2

answer: 3x+2

Step-by-step explanation:

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Answer:

\huge\boxed{x=1\ \vee\ x=2}

Step-by-step explanation:

3^{2x}-4\cdot3^{x+1}+27=0\\\\\text{use}\ (a^n)^m=a^{nm}\ \text{and}\ a^n\cdot a^m=a^{n+m}\\\\\left(3^x\right)^2-4\cdot3^x\cdot3^1+27=0\\\\\left(3^x\right)^2-12\cdot3^x+27=0\\\\\text{substitute}\ 3^x=t>0\\\\t^2-12t+27=0\\\\t^2-3t-9t+27=0\\\\t(t-3)-9(t-3)=0\\\\(t-3)(t-9)+0\iff t-3=0\ \vee\ t-9=0\\\\t-3=0\qquad\text{add 3 to both sides}\\\boxed{t=3}\\\\t-9=0\qquad\text{add 9 to both sides}\\\boxed{t=9}

\text{We return to substitution:}\\\\3^x=t\\\\3^x=3\ \vee\ 3^x=9\\\\3^x=3^1\ \vee\ 3^x=3^2\\\\\boxed{x=1}\ \vee\ \boxed{x=2}

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3 years ago
Find the missing number in this proportion.<br><br> 7 / 35 = ? / 28
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Use the graph to find the difference in temperature between 11 A.M. and 1 P.M. ​
swat32

Answer:

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Step-by-step explanation:

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3 years ago
Read 2 more answers
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Answer:

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(x + 4)(x - 2)
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