Solve the two-step equation. -9x + 0.4 = 4

Which operation must be performed to move all the constants to the right side of the equation?
A. Add 0.4
B. Add 4
C. Subtract 0.4
D. Subtract 4

Then, which operation must be performed to isolate the variable?
A. Add -9 on both sides
B. Subtract -9 on both sides
C. Multiply by -9 on both sides
D. Divide by -9 on both sides

The solution to the equation is x = .

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.