3 years ago

Anyone know how to do exponential funtion word problems

Mathematics

1 answer:

aalyn [17]3 years ago

6 0

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60 in the ratio of 5:7

dusya [7]

5+7 = 12
60/12 = 5

5 x 5 = 25
5 x 7 = 35

<span>60 in the ratio of 5:7 = 25:35
hope it helps</span>

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Answer:

125.12 on each bill

Step-by-step explanation:

250.24 divided by 2 = 125.12

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According to the research, 43% of homes sold in a certain month and year were purchased by first-time buyers. A random sample

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3 years ago

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

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Solving by completing the square method

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

The solution set of the equation is $6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}$

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3 years ago

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