Which of the following rotations are congruent? 1. 90 degree clockwise rotation and a 180 counter-clockwise rotation
2. 90 degree clockwise rotation and a 270° counterclockwise rotation
3. 180 counterclockwise rotation and a 270° counterclockwise rotation
4. 270° clockwise rotation and a 270 counterclockwise rotation
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Idon't know what's the answer lol

Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.