How are compound, elements, and mixure different

a ball is dropped from rest from a high window of a tall building and falls for 4 seconds. Neglecting air resistance. The final velocity of the ball is m/s. (g=-9.8m/s 2) the first person to answer me gets the brainliest HELPPPPPP ASAP . Which triangle represents the reflection ABC across the y-axis ? Which is the best explanation regarding the foundations of American government? Name two important parts of the celestial sphere which one of them is it? HELP I HAVE 30 POINTS I NEED SOMEONE WHO HAS READ THE BOOK LITTLE WOMAN Anthony notices that after gym class he is always thirsty for water. He knows that is how his body helps maintain a steady, stable internal state called homeostasisWhich of the following is an example of how cells maintain homeostasis? The production process of rods from machine "A" yields specimen with the following specs. Mean: (LA)=20.00mm, STD: s(LA)=0.50mm. You need to purchase new machine to increase the production capacity and accuracy together. If the new machine "B" will produce half of the total rods, what is the STD, s(LB), that needs to achieve the total STD, s(LT)=0.4mm? Assume Corr(A,B)=0.4 Marco sorted these solid figures into two groups. What is true about the groups?Group 1Group 2All figures in Group 2 appear to have atleast one triangular face. Find the distance between each pair of points. Round to the nearest tenth(-2,2) (5,2) PART A: Which sentence best describes the centralidea of the passage?A The notions of self-image, self-esteem, and theideal self all contribute to a person'sunderstanding of themselves.B By understanding the concepts of self-image,self-esteem, and ideal self, people can leadhappier, more successful lives.C Any difference between self-image and the idealself can produce incongruence, so people shouldtry their best to get rid of this entirelyD Self-concept is essential for humans tounderstand their status in a complex society. At a certain interest rate the present value of the following two payment patterns areequal: (i)$200 at the end of 5 years plus$500 at the end of 10 years. (ii)$400.94 atthe end of 5 years. At the same interest rate$100 invested now plus$120 invested atthe end of 5 years will accumulate to P at the end of 10 years. Calculate P. Sam wants to grow in his current role, and he decides to take a three-month skill enhancement course. Sam is demonstrating . Y=x-9 Help if possible I really need help before 6:09"This is my mother: When I say theword in fun to one of my sisters, my mother slaps me One adjective word if x=2-2, then find the value of x+6x+12x Triangle DEF is a right triangle. What is the measure of ZEFD?D57FE Carbon has 6 protons and 6 neutrons for an atomic mass of 12. But there are a some carbon atoms have 8neutrons (instead of 6). These carbon atoms have a mass of 14 (instead of 12).What term refers to the fact that in any type of atom some of those atoms have different numbers of neutrons?Select one:a. ionsO b. isotopesO c. neutrons what two groups lived in scandalous luxury and extravagance I NEED HELP PLEASE !!!