MATHEMATICS MIDDLE SCHOOL

Point A lies on the circumference of the unit circle and is in the first quadrant. If the x-coordinate of the point is 0.12, its y-coordinate is .

Answers

Answer 1

Answer:

Answer

0.99

Explanation

Point A forms a right triangle.

Hypotenuse, c = 1 unit

Base length, x = 0.12 units

Then using the Pythagoras theorem,

y² = c² - x²

y² = 1² - 0.12²

= 2 - 0.0144

= 0.9856

y = √0.9856

= 0.992773891

Answer to the nearest hundredths is 0.99.

Answer 2

Answer:

we are given

Point A lies on the circumference of the unit circle

so, we can write equation of circle as

$x^2 +y^2 =1^2$

now, we are given

$x =0.12$

so, we can plug it in equation and find y

$0.12^2 +y^2 =1^2$

$y^2=0.9856$

$y=√(0.9856),\:y=-√(0.9856)$

Since, point-A lies in first quadrant

so, both x-value and y-value will be positive

so, we get

$y=√(0.9856)$ .............Answer

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Answers

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Answers

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In a tile game, Kent lost 53.5 points in the first round and 12.9 points in the second round.After these two rounds, what is Kent's score?
A. -66.4 points
B. -40.6 points
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Answers

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Answer:

-66.4

Step-by-step explanation:

You have to add

53.5+12.9=66.4

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Answers

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5 squared is 25. 25 x 25 is 625 which is 25 squared.

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