write 21/4 as a mixed number

A hot air balloon descends to the ground. The function a(t) = 210 15t can be used to describe the altitude of the balloon as it approaches the ground. The time is in minutes.What does t represent?What does a(t) represent?What information will a(5.5) give? Given B(17,5), C(11, -3), D-1, 2), andE(x, -6), find the value of x so that BC || DE. To show that the triangles are congruent, triangle ABC could be transformed bywhich movement(s) to fit exactly on triangle XYZ? HURRY !!! 100 points!!Which of the following is NOT a possible verdict following jury deliberations?A. guiltyB. not guiltyC. delayed decisionD. hung juryBC Enumerate and explain the branches of economics. How was the author's tone different at the end of the story "Po-No-Kah," compared to the beginning? Jason bought a TV that was $1099.99. He made adown payment of 199.99 and wants to pay the rest in9 equal monthly payments. How much would he payeach month? A graduated cylinder has 20mL of water. A rock is placed in the graduated cylinder and the volume rises to 30mL. How can you calculate the volume of the rock? Please help me and explain the answer is the answer Write leastfive sentences on how the Syrian Civil War couldhave been prevented Where in an article is the thesis typically located When you seek to define an issue you should frame it in positive termsTrue or false Which of the following effects of the French and Indian War was most responsible for starting the American Revolutionary War?A) Native Americans lost large amounts of territory.B) Britain incurred a large debt as a result of the war.C) France ceded land in Canada and east of the Mississippi to Britain.D) Spain ceded Florida to Britain and gained land west of the Mississippi. Let P be a point not on line k Let p be the image of P after a reflection about the line K and let A any point on line k. Determine whether each statement below is true for all points P true for some points P or not true for any points P The driver of a car slams on the brakes, causing the car to slow down at a rate of20.0ft/s as the car skids 295ft to a stop.How long does the car take to stop? What was the cars initial speed? Choose the CONJUNCTION.Please shovel the snow and clean the windshield.A.theB.snowC.and Liberals say that the Great Depression went too far, and headed us on the road toward socialism.TrueFalse Jen and Nikki are making bracelets to sell at the local market. They determined that each bracelet would have eight beads and two charms. Create 5 ordered pairs (charms, beads) that could be used to graph this relationship write 29/7 as a mixed number. i need help in finding the sum for (16 x2) + (14x2 + 7x5 17x4 + 9) plz help :( im rlly bad at math