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const2013 [10]
3 years ago
6

Which explains how to find the radius of a circle whose equation is in the form x2 + y2 = z?

Mathematics
2 answers:
bezimeni [28]3 years ago
7 0

Answer:

z would be your radius

Step-by-step explanation:

Equation: (x - h)² + (y - k)² = r²

Simply take √r² to find <em>r</em>, your radius.

lys-0071 [83]3 years ago
3 0

Answer:

The radius is the square root of the constant term, z.

Step-by-step explanation:

option C on edgenuity 2020

hope this helps!

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When deriving the quadratic formula by completing the square, what expression can be added to both sides of the equation to crea
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Answer:

According to steps 2 and 4. The second-order polynomial must be added by -c and b^{2} to create a perfect square trinomial.

Step-by-step explanation:

Let consider a second-order polynomial of the form a\cdot x^{2} + b\cdot x + c = 0, \forall \,x \in\mathbb{R}. The procedure is presented below:

1) a\cdot x^{2} + b\cdot x + c = 0 (Given)

2) a\cdot x^{2} + b \cdot x = -c (Compatibility with addition/Existence of additive inverse/Modulative property)

3) 4\cdot a^{2}\cdot x^{2} + 4\cdot a \cdot b \cdot x = -4\cdot a \cdot c (Compatibility with multiplication)

4) 4\cdot a^{2}\cdot x^{2} + 4\cdot a \cdot b \cdot x + b^{2} = b^{2}-4\cdot a \cdot c (Compatibility with addition/Existence of additive inverse/Modulative property)

5) (2\cdot a \cdot x + b)^{2} = b^{2}-4\cdot a \cdot c (Perfect square trinomial)

According to steps 2 and 4. The second-order polynomial must be added by -c and b^{2} to create a perfect square trinomial.

7 0
2 years ago
Read 2 more answers
plesee help me do I need it under 25min and don't answer if you don't know or else u will be reported thank you (◔‿◔)​
34kurt

Answer:

l = 2.25 cm

Step-by-step explanation:

given l is inversely proportional to w² then the equation relating them is

l = \frac{k}{w^2} ← k is the constant of proportion

(i)

to find k use the condition w = 1.5 , l = 16 , then

16 = \frac{k}{1.5^2} = \frac{k}{2.25} ( multiply both sides by 2.25 )

36 = k

l = \frac{36}{w^2} ← equation of proportion

(ii)

when w = 4 , then

l = \frac{36}{4^2} = \frac{36}{16} = 2.25 cm

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