In a mathematics Olympiad, a correct answer is awarded 3 marks, but a wrong answer is awarded
-1 mark (i. e. 1 mark will be deducted). If no answer
is given, 0 marks will be awarded. Albert took part
in this Olympiad. There were 30 questions. He
answered 17 questions correctly and 5 questions
wrongly. How many marks did he score?

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

Jordan has $5.37, which he is using to buy ingredients to make salsa. he is buying one red pepper for $1.29 and three pounds of tomatoes. if jordan has exactly the right amount of money he needs, what is the price per pound of the tomatoes? choose the correct equation to represent this real-world problem. solve the equation and verify the reasonableness of your answer. a pound of tomatoes costs .

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)