HELP PLS>>> The vector (3, - 7) ) is rotated by an angle of (3pi)/4 radians and then reflected across the y-axis. If the resulting vector is [a/b], then a=__ and b=__

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Step-by-step explanation:

First, the vector must be transformed into its polar form:

Let assume that vector is rotated counterclockwise. The new angle is:

Which is coterminal with . The reflection across y-axis is:

The equivalent vector in rectangular coordinates is:

 a = -2.83 and b = 7.07.

Step-by-step explanation: I got this correct on Edmentum.

Also, to get the answer you first multiply

The you multiply the answer which is  then you get the answer or  -2.83 and 7.07. You can use a calculator like the one on ma th wa y to make multiplication easier, but when you do multiply always  put the 2x2 equation before the 2x1 to get another vector matrix.

i can't see the picture : /

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all