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USPshnik [31]
4 years ago
5

What exactly is meant by the expression 'Completing the Square'? Give an example as part of your explanation.

Mathematics
1 answer:
Annette [7]4 years ago
4 0

Answer:

completing the square is making the expression a bunch of perfect squares in order to solve it easily and find

Step-by-step explanation:

If i have the expression x^2 + 4x + 1 = 0

i move the one to the right side

x^2+4x=-1

then i add b over 2 squared to both sides

that is x^2+4x+4=3

now i would simply take the square root of both sides of this equation,

(x+2)^2=positive or negative 1.73

x+2=-1.73

x+2=1.73

then you subtract or add to solve for both possible values of x

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Complete the remainder of the table for the given function rule:
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Answer:

(-2,4) , (0,5) , (2,6) , (4,7)

Step-by-step explanation:

you just substitute every value of x in the equation and you get y

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7.66

Step-by-step explanation:

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Show if √5×√5×√8 is rational or irrational numbers​
kobusy [5.1K]
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The two pyramids are similar. Find the volume of the smaller pyramid. Round your answer to the nearest hundredth.
mihalych1998 [28]

Answer:

A) 5.12mm³

Step-by-step explanation:

Step 1

Find the volume of the bigger pyramid

This is a triangular based pyramid.

The formula to use is given as Volume of Pyramid =

1/3 × Area of the triangle × Height

Area of the triangle = 1/2 × 3 mm × 4mm = 6mm²

Volume of the large pyramid = 1/3 × 6mm² × 5mm

= 10mm³

We are given the length of the small pyramid as 4mm

We would be using was is known as scale factor to find the volume of the small pyramid

The scale factor k = (Height of the small pyramid)³/ (Height of the Large pyramid)³

k = 4³/5³

k = Volume of small pyramid/ Volume of large pyramid

Volume of small pyramid = X

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Hence,

4³/5³ = X/10

Cross Multiply

= 4³ × 10 = 5³ × X

X = (4³ × 10)/ 5³

X = 5.12mm³

5 0
3 years ago
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