Which shows all the equations that represent the same solution? 1. 7x - 5 = 8x

II. 5x + 11 = x-5

III. 3x - 3 = 4x + 1

What is the measure of sty in oo below? 130 310 230 50

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?

Multiply and simplify. 2x2y3z2 · 4xy4x2 how to do?