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6. A soccer ball is kicked into the air. Its height, h, in metres, is approximated by the equation h=−5t2+15t+0.5, where t is the time in seconds since the ball was kicked. a) From what height is the ball kicked? b) When does the ball hit the ground? c) When does the ball reach its maximum height? d) What is the maximum height of the ball? e) What is the height of the ball at t=3 ? Is the ball travelling upward or dowrward at this time? Explain. f) When is the ball at a height of 10 m ?
Algebra Mar 26, 2025
Nitya baked a cake. Keerthi ate 1/6 of the cake. Shishira ate 1/5 of what's left. Tanmayee ate 1/4 of what was left after that. Isra ate 1/3 of what was left after that. Ria ate 1/2 of what was left after that. How much of the original cake was left?
Arithmetic Mar 26, 2025
Nitya baked a cake. Keerthi ate 1/6 of the cake. Shishira ate 1/5 of what's left. Tanmayee ate 1/4 of what was left after that. Isra ate 1/3 of what was left after that. Ria ate 1/2 of what was left after that. How much of the original cake was left?
Arithmetic Mar 26, 2025
A copper bar has a mass of 1900 g and a volume of 675 cm3. Calculate the density of the copper bar. A metal block has a mass of 10009 and has dimensions of 7.5 cm by 6 cm by 10 cm . Use this information to find the density of the metal block.
Physics Mar 26, 2025
1) 12=18−d
Algebra Mar 26, 2025
10) −4+w=−12
Algebra Mar 26, 2025
8) 18z=−9
Algebra Mar 26, 2025
1) 3+a=−13
Algebra Mar 26, 2025
What do you call the condition when blood pH rises above normal limits? Ketosis None of the choices are correct. Alkalosis Acidosis
Medicine Mar 26, 2025
Calculate the pH of a buffer solution containing 0.250 M of ammonia and 0.0500 M of ammonium chloride. The value for K3 for the ammonium ion is 5.62×10−10M ? 6 10 O9 8
Chemistry Mar 26, 2025
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