Help please asap tysm! 10 points! Will mark brainliest if you put in a random answer you will be reported! Tysm! <3 Need this asap please tysm!

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?