On my clock the hour hand is 5.5 cm, the minute hand 8 cm and the second hand 7 cm, measured from the centre. Calculate the distance between the tips of the

a) hour and minute hands at 10 o'clock

b) minute and second hands 15 seconds before 20 past the hour

c) hour and minute hands at 10:20.​

What is the size of the matrix resulting from

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

Felix wrote several equations and determined that only one of the equations has no solution. which of these equations has no solution?