Need some , missed two days of school totally in the dark with geometry, been doing pretty well with my homework but i'm not sure by what this means?
a right triangle has 90 degrees, or angle, i know a right angle has 90 degrees is that correct, i don't really understand the question

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

Do more republicans (group a) than democrats (group b) favor a bill to make it easier for someone to own a firearm? two hundred republicans and two hundred democrats were asked if they favored a bill that made it easier for someone to own a firearm. how would we write the alternative hypothesis?

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?