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solmaris [256]
2 years ago
13

In the Olympics, the athlete received an 85% score on the compulsory exercises, which are weighted 60%. In the optional round, w

eighted 40%, the athlete received a 90%. What was the athlete's weighted average score?
Mathematics
1 answer:
mote1985 [20]2 years ago
4 0

Answer:

jjhbnjycfgkjjhvgyh hv bv h. bgg h. hb.

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Rewrite x2 − 6x + 7 = 0 in the form (x − a)2 = b, where a and b are integers, to determine the a and b values.
Setler79 [48]

Answer:

Therefore values of a and b are

a=3\ and\ b = 2

Step-by-step explanation:

Rewrite x^{2}-6x+7=0 in the form

(x-a)^{2}=b

where a and b are integers,

To Find:

a = ?

b = ?

Solution:

x^{2}-6x+7=0 ..............Given

Which can be written as

x^{2}-6x=-7

(\frac{1}{2} coefficient\ of\ x)^{2}=(\frac{1}{2}\times -6)^{2}=9

Adding half coefficient of X square on both the side we get

x^{2}-6x+9=-7+9=2 ...................( 1 )

By identity we have (A - B)² =A² - 2AB + B²

Therefore,

x^{2}-6x+9=x^{2}-2\times 3\times x+3^{2}=(x-3)^{2}

Substituting in equation 1 we get

(x-3)^{2}=2

Which is in the form of

(x-a)^{2}=b

On comparing we get

a = 3 and b = 2

Therefore values of a and b are

a=3\ and\ b = 2

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3 years ago
In a fruit punch drink, the 3 ingredients are apple juice, orange juice and cranberry juice. If 2/7 of
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Answer:dwqdwdqw

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2 years ago
The figure below shows a shaded region and a non-shaded region. Angles in the figure that appear to be right angles are right an
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Answer:

Step-by-step explanatioihhin:

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2 years ago
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Which of these sequences is a geometric sequence?
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The geometric sequence is 3, 9, 27, 81, 243, 729 because each time it is multiplied by 3.
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Animal A and Animal B each have 95% of their DNAin common. Animal A and Animal C each have 50% of their DNA in common. What does
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A is probably much more related to B than to C

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3 years ago
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