Which mathematical concepts were the result of the work of René Descartes? Check all that apply. theory of an Earth-centered universe
formula for the slope of a line
Pythagorean theorem for a right triangle
problem solving by solving simpler parts first
Cartesian plane for graphing
trusting previous teachers for knowledgePlagiarism can be avoided by
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trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral

yes

step-by-step explanation:

sadsdda

step-by-step explanation:

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116