Questions by David St Denis

Questions by David St Denis

Given that ax²+bx+c= 0 and that a, b, and c are integers, match each of the following values of the discriminant to the type of solutions. The discriminant is -3 two real rational N [ Select] The discriminant

asked Aug 17, 2023

1 answer

37 votes

168k views

Find the derivative of x³ln(cos²x) I just need the working and an explanation of how you got to your answer.

asked Aug 6, 2023

1 answer

41 votes

526k views

How many grams of oxygen are needed to react completely with 200.0 g of ammonia, NH3? 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)

asked Apr 20, 2023

1 answer

31 votes

120k views

The probability of Tails when a biased coin is thrown is 0.8 The coin is thrown 2000 times What is the expected number of Tails? A 1600 B 1000 C 800 D 160

asked Feb 3, 2023

1 answer

44 votes

264k views

Please help on bothhhh I’m stuck

asked Dec 2, 2022

2 answers

5 votes

356k views

Part of the population of 5,750 elk at a wildlife preserve is infected with a parasite. A random sample of 50 elk shows that 10 of them are infected. How many elk are likely to be infected? Based on the

asked Nov 15, 2022

1 answer

35 votes

277k views

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