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solmaris [256]
3 years ago
11

Solve x2+12x=82 using completing the square. Answer the questions below.

Mathematics
1 answer:
galben [10]3 years ago
4 0

Answer:

exact form : x =  ± √ 118 − 6

Decimal form :  x =  4.86278049 or − 16.86278049

Step-by-step explanation:

Use the formula  ( b /2 ) ^2  in order to create a new term. Solve for  x  by using this term to complete the square.

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Which interval contains the median sandwich price?
lakkis [162]

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Step-by-step explanation:

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7 0
2 years ago
X=square root of 880-8x
Sunny_sXe [5.5K]
x=\sqrt{880-8x}\\
D:880-8x\geq0 \wedge x\geq0\\
D:8x\leq880 \wedge x\geq0\\
D:x\leq 110 \wedge x\geq0\\
D:x\in\langle0,110\rangle\\
x^2=880-8x\\
x^2+8x-880=0\\
x^2+8x+16-896=0\\
(x+4)^2=896\\
x+4=8\sqrt{14} \vee x+4=-8\sqrt{14}\\
x=-4+8\sqrt{14} \vee x=-4-8\sqrt{14}\\
\\ x=-4-8\sqrt{14}\not \in D \Rightarrow \boxed{x=-4+8\sqrt{14}}
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3 years ago
Which of the following is an exponential function?
aleksklad [387]

Answer:

d) f(x)=3^x

Step-by-step explanation:

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7 0
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Which describes the range for a set of ordered pairs?
Ulleksa [173]

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The range is the set of all second elements of ordered pairs (y-coordinates). Only the elements "used" by the relation or function constitute the range. Domain: all x-values that are to be used (independent values).

Step-by-step explanation:

hope this helps

plz hit the thank you button

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