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nata0808 [166]
3 years ago
12

Find two consecutive whole numbers that square root 86 lies between.

Mathematics
2 answers:
melisa1 [442]3 years ago
7 0
Find two consecutive whole numbers that square root 86 lies between.

Alexus [3.1K]3 years ago
3 0
The square root of 86 is 9.2...... Hence, it lies between 9 and 10.
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ale4655 [162]
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3 0
2 years ago
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Solve x2 = 12x – 15 by completing the square. Which is the solution set of the equation? Solve x2 = 12x – 15 by completing the s
Svetlanka [38]

Answer: 6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}

Step-by-step explanation:

Given

Quadratic equation is

x^2-12x+15=0

Solving by completing the square method

\Rightarrow x^2-2\cdot 6\cdot x+15=0\\\text{add and subtract 36}\\\Rightarrow x^2-2\cdot 6\cdot x+15+36-36=0\\\Rightarrow x^2-2\cdot 6\cdot x+36+(-36+15)=0\\\text{using}\ (a-b)^2=a^2+b^2-2ab\\\Rightarrow (x-6)^2-21=0\\\Rightarrow (x-6)^2=21\\\Rightarrow x-6=\pm \sqrt{21}\\\Rightarrow x=6\pm \sqrt{21}

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6 0
2 years ago
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2) Angelina is deciding which bank would give her the
Nutka1998 [239]

Answer:

3.33%

Step-by-step explanation:

Given that :

Final amount A= 320

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Time (t) = 2 years

Yes, the information is enough to obtain the interest rate :

Using the relation :

A = P(1 + rt)

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320 = 300(1 + 2r)

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2 years ago
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Answer:

1 3/8

Step-by-step explanation:

3 2/3 = 11/3

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3 years ago
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Help solve ?<br> Need answer soon
galina1969 [7]

Answer:

A.

Step-by-step explanation:

It seems and makes the most sense. Anyways have a nice day/night :). Also if you can may I please have brainliest

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