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siniylev [52]
3 years ago
15

I need help please find b​

Mathematics
1 answer:
dybincka [34]3 years ago
5 0

Answer:

12

Step-by-step explanation:

This triangle is a 3-4-5 Pythagorean Triple. 9 is 3*3, 15 is 5*3, so b is 4*3, which is 12. Alternatively, you could use the Pythagorean Theorem's converse, sqrt(15^2-9^2), and get 12.

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Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations. (-4, 9), (0,
Tresset [83]

Answer:

\boxed{y=2x^2+4x-7}

Step-by-step explanation:

Let the quadratic function be

y=ax^2+bx+c


We substitute (-4,9) into the equation to obtain;


9=a(-4)^2+b(-4)+c


\Rightarrow 9=16a-4b+c---(1)


We substitute (0,-7) to obtain;


-7=a(0)^2+b(0)^2+c


\Rightarrow c=-7---(2)


We finally substitute (1,-1) to obtain;


-1=a(1)^2+b(1)^2+c


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We put equation (2) into equation (1) to get;


9=16a-4b-7


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\Rightarrow a+b=6---(5)


We add equation (4) and (5) to get;

4a+a=6+4



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We put a=2 into equation (5) to get;


2+b=6


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The reqiured quadratic function is

y=2x^2+4x-7

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3 years ago
What is the answer to 2 4/5+5 2/3 in simplified form
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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How do I divide 301 divided by 7
lina2011 [118]

Answer:

43

Step-by-step explanation:

7 goes into 301 43 times

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