The point 3,4 lies on the graph of f(x)= sqrt(2x+a). which ordered pair below lies on the graph of g(x)=1/2sqrt(2x+a)?
a)3/2,2
b)5/2,3/2
c)3,2
d)27,8

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

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?