Parallelogram abcd is a rectangle.
ac = 4y
bx = y + 4
what is the value of y?
enter your answer in the box.
y =
i'm not sure if i worked it out correctly, so could you explain that as well? .

Danny draws a transversal, t, on two parallel lines ab and cd, as shown below: he makes the following table to prove that the alternate interior angles are equal: which is the missing justification? (6 points) corresponding angles formed by a transversal on parallel lines are supplementary. corresponding angles formed by a transversal on parallel lines are congruent. co-interior angles formed by a transversal on parallel lines are congruent. co-exterior angles formed by a transversal on parallel lines are congruent.

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels