The scatter diagram shows the scores of 10 students in their paper 1 and paper 2 Maths GCSE exams. A line of best fit has been drawn.

a) what type of correlation is shown by the graph

b) A pupil who scored 50 in his paper 1 exam got ill and missed paper2.

Use the line of best fit to predict what his paper 2 mark could have been.

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

Name the most appropriate metric unit for each measurement like a length of an carrot

Aking and his army will attempt to capture a fortress. the left and right flanks break off from the main group to attack the west and east guard towers. suppose the left flank has a 60% chance of success and the right flank has a 75% chance of success, independently of one another. if both flanks capture their respective targets, then the king has a 98% chance of successfully taking the fort. if, however, only the left flank captures its tower, the king has an 80% chance of success; if only the right flank succeeds, the king has a 50% chance. if both flanks fail, then the king's chance of capturing the fort drops to 20%. it turns out the king captures the fort. what is the probability that one, and only one, flank was successful (either the left, or the right, but not both)? (round your answer to 3 decimal places)