i need help i dont understand

Which chemical symbol describes an element?o H2Oo 02o CH4o H2 SO4 Help with the question above please???? Convert 360 s to ms? Pls need help A cross country skier moves from location A to location B to location C to location D. Each leg of the back and forth motion takes 1 minute to complete; the total time is 3 minutes.What is the distance travelled by the skier in the first minute?What is the displacement of the skier in the first minute?What is the distance travelled by the skier in the first two minutes?Please help itll be greatly appreciated!! What evidence will Dr. Dowell likely examine first tosee if the girl died from bird flu?O how often the girl washed her handsO whether the girl lived with her motherOwhether the girl lived near birdsO how far the girl's house was from a water source2 What is the answer to this? A speed walker covered 4 1/2 mi in 3/4 hour. How far will he walk in 3/4 hours if he walks twice as fast?PLS HELP ASAP Which of the following numbers can be asolution to the inequality for number 2?2x - 15 < -23(Check ALL that apply)-7-434 which of the following is the system of writing used by ancient Egyptians which were only deciphered upon the discovery of the Rosetta Stonea) phoenician alphabet b) hieroglyphics c) cuneiform d) sanskrit What is the square of 3?12927 615 Which of the following can be describe as a sedentry activity ? True or false, you should always consider yourself apart of the text's intended audience? Change 66 inches to feet True or false Exterior angles are the angles created when the sides of the triangle are shortened. This statement is true.This statement is false. Exterior angles are pairs of angles whose measures add up to 360 This statement is false. Exterior angles are the angles inside the triangle This statement is false. Exterior angles are the angles created when the sides of the triangle are extended. What are the exponents A^m * A^n = Which can be one reason for workplace conflict?A. agreeing on way to achieve goalsB. accepting people with different religionsC. avoiding perceptions based on biasD. rejecting cultural diversity Create a conditional expression that evaluates to string "negative" if userVal is less than 0, and "non-negative" otherwise. Ex: If userVal is -9, out what is the answer please help 3[(8-4)^5 8 please please help me! Try to solve (-78)+43 # how do you know this from hamurabis code