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Tema [17]
3 years ago
11

Solve 2x2 – 6x + 10 = 0 by completing the square.

Mathematics
1 answer:
Ugo [173]3 years ago
5 0

Answer:

Step-by-step explanation:

2x^2-6x+10=0

2(x^2-3x)+10=0

2(x-(3/2))^2-9/4)+10=0

2(x-(3/2))^2+10-9/2=0

2(x-(3/2))^2+(20-9)/2=0

2(x-(3/2))^2+11/2=0

2(x-(3/2))^2=-11/2

square is always positive so there is no solution

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George wrote an integer. The opposite of George's integer is - 53. Which of these statements about George's integer must be true
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Answer:

D I and IV

Step-by-step explanation:

The opposite of an integer "x" is "-x".

I. The integer is 53.  →  Since the opposite of George's integer is -53, the integer is -(-53) = 53

II. The integer has an absolute value of - 53.  →  The absolute value of 53 is 53.

III. The integer is - 53.  →  It was 53, found in I.

IV. The integer has an absolute value of 53.  →  It has an absolute value of 53, found in II.

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Billy likes to go cycling.
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Answer:

560 metres

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80 cm in metres is 0.8 metres.

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Now 1.6 metres times 350 gives us 560.

So the answer is 560 metres.

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4 5/8 = 37/8
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