Is 8 old rings for every 1 new ring - 16 old rings for every 2 new rings is proportional or non proportional

Describe and correct the error in simplifying 5x^7 * 2x^4 5x^7*2x^4 = 7x^7+4 =7x^11

Isidro flips a fair coin 40 times. How many times can he expect heads to appear?

4 oz per one minute is how many gallons per one hour?

Dilson works 2 hours each night for 10 nights. Dilson earned a total of $300. If Dilson wants to calculate his hourly rate. How much did he earn per hour?

Which choice is the graph of a line parallel to the line represented by this equation? A. B. C. D.

Tom had $84.50 and then spent $12.25 for a music CD, $17.85 for a gift, and CV$15.45 for gasoline. How much did he have left?

Answer quickly for 5 star and brainliest! A hot air balloon is 10 meters above the ground and rising at a rate of 15 meters per minute. Another balloon is 150 meters above the ground and descending at a rate of 20 meters per minute.

A recent poll shows that 35% of adults are in favor of increased funding for education. The number of adults surveyed for the poll was 260. How many of the adults surveyed were in the favor of increased funding for education?

What is the number 8.293 round in the tenths

What is the answer for 5 1 - = - + d 6 3