Plz help correct answer gets brainiest

81 deg

Step-by-step explanation:

9x=81degrees

for complementary angles, a+b = 90deg

for this question, a = 9b

=> 9b + b = 90deg

b = 9deg

=> a = 9b = 81deg

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branilest PLEASE

step-by-step explanation:

rectangles are made up of 4 right angles, which means that a side and a base meet perpendicular to one another.   their slopes then have to reflect perpendicular slopes.   perpendicular slopes are opposite reciprocals of one another.   for example, if the slope of one line is +2/3, then the perpendicular slope to that would be -3/2.   so we look for that combination in our choices.

all of them satisfy that condition (so what's the question, i guess? )

can someone me: the midsegment through the legs of an isosceles triangle is 4 in. find the sides of the triangle if its perimeter is 20 in. ,   and point g is the centroid of the right △abc with hypotenuse ab=18 in. find cg.