Can Someone help me?

I believe the answer A.

Step-by-step explanation:

A coin has 2 sides - heads and tails.

A fair number cube has 6 sides - 1, 2, 3, 4, 5 and 6.

When doing a tree diagram, you show all the possible outcomes that you can get.

The other options either have missing numbers from the cube, a missing side from the coin, or both.

Hope this helped. :)

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x