help? I chose mit but i don't think i'm right lol

Work out the perimeter of this semicircle.Take a to be 3.14210 cm Find the volume.I need this in now like ASAP 10 points You measure 34 textbooks' weights, and find they have a mean weight of 69 ounces. Assume the population standard deviation is 8.2 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places Worth 20 points Il will mark brainiest! :) The picture is included too oh and the question is already in the picutre but just incase you cant see what it says it says this In the diagram below lines, AB and CD are . sorry if the picture is a bit dark Jane and Tannic split the cost of buying a video game. The game costs$25, and the sales is 6% markup. How much do they each pay? Set up an algebraic equation that could represent the following situation:Nkateko sells bananas at the low but fixed price of R3/kg. In order to ensure that she makes a reasonable profit, she adds a certain fixed amount of money to any quantity of bananas purchased. A customer who bought 4 kg of bananas was observed paying R14. Identify each of the following as endothermic or exothermic. a. Water in a pond evaporates. b. Methane gas burns on a stove top. c. Water freezes to form ice.d. Energy flows from the system to the surroundings. e. Energy flows from the surroundings to the system. A vault contains 3000 worth of nickels.How many nickels are in the vault can somebody help plz which of these elements has two valence electrons?a. hydrogen (H)b. barium (Ba)c. nitrogen (N)d. krypton (Kr)e. bromine (Br) Can some people answer these questions so i can get to know the age group i an making my target market for DT-GSCE thankyou if you do my deadline is tomorrow :D Which is true about biomechanical principles? allows for more specific feedback to ehance performance allows for more specific feedback to ehance performance courses are not required for a degree in physical education courses are not required for a degree in physical education there are 10 biomechanical principles there are 10 biomechanical principles none of the above What are solutions to the equation x^2-34=864 please help! (listing BRAINLIST and giving points) :D The equation of a linear function in point-slope form is y y1 = m(x x1). Harold correctly wrote the equation y = 3(x 7) using a point and the slope. Which point did Harold use Can somebody help me? In what way were Christopher Columbus and Amerigo Vespucci similar? how did the Europeans force the people of Africa to work for them Is it important for an electrician to know the right tool for the job? Can someone help Im confused