Which is the correct calculation of the y-coordinate of point
a?

y =

Step-by-step explanation:

The given circle has a radius of 2 thus OA = 2 , hypotenuse of right triangle

Using Pythagoras' identity in the right triangle formed to find y

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

1² + y² = 2²

1 + y² = 4 ( subtract 1 from both sides )

y² = 3 ( take the square root of both sides )

y =

Thus A = (1, )

answer: the anser is 3

step-by-step explanation:

c- 2o is equal to 9

this excerpt is taken from the book “we shall not be moved : the women’s factory strike of 1909 “ and is written by joan dash. it is the story of the great strike when almost 30thousand women working in factories in america formed a union to fight unsafe working conditions, long working hours and miserable wages.

question: which best states the author’s purpose for including this information in the text?

answer: to challenge the reader’s ideas about a historical event