List the angles in order from smallest to largest. a) ∠a < ∠b < ∠c b) ∠b < ∠a < ∠c c) ∠c < ∠a < ∠b d) ∠a < ∠c < ∠bsidesab=2.8bc=3ac=3.2

C)∠C < ∠A < ∠B

Step-by-step explanation:

We determine the answer by visualizing a flat board with two adjustable pins and a loop of string 9 units long. Pull the string taut with a pencil and drag it to form an isosceles triangle.

To establish ∠C < ∠A, set the pins 3.2 units apart and label them A and C, with the pencil point B. Initially AB = BC = 2.9 units, and ∠C = ∠A. Move the pencil leftward so AB decreases to 2.8 units and BC increases to 3.0 units. Clearly angle A increases and angle C decreases.

To establish ∠A < ∠B, set the pins 2.8 units apart and label them A and B, with the pencil point C. Initially AB = BC = 3.1, and ∠A = ∠B. Move the pencil rightward so BC decreases to 3.0 units and AC increases to 3.2 units. Clearly angle B increases and angle A decreases.

$9.41

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18