There are 3 red marbles
for every 4 blue marbles.
If you have 84 marbles,
how many blue marbles
do you have?
?

you will have 63 red marbles.

Step-by-step explanation:

84 divided by 4 equals    21   so 3 x 21 equals 63.

i believe the answer is d.

hope it you! : d

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°