if the following system of equations was written as a matrix equation in the form AX=C, and matrix A was expressed in the form a=[a c] [b d] find the value of a-b+c+d. 4x2y=7 5x-6y=9

answer: 414,377,008

step-by-step explanation:

just multiply it

b

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.

answer: sorry i dont really know but can we talk all my friends r gone and im bored

step-by-step explanation: