In the figure two semicircles are drawn at the centre of the large semicircle as shown in the figure . A fine dot is placed into the figure without looking
into it.
a) If the radius of the smaller semicircle is taken as 'r', What will be the
radius of the larger semicircle ?
b) What is the probability of being the dot inside the shaded semicircles ?
c) What is the probability of being the dot outside the shaded semicircles ?
I need Answers with explanation , please

What could explain what happened when the time was equal to 120 minutes

Which of the following values are in the range of the function graphed below? check all that apply ! - will give the answer "brainliest! "

(01.03 mc) which of the following is a step in simplifying the expression x multiplied by y to the power of 2 over x to the power of negative 3 multiplied by y to the power of 3, the whole to the power of negative 4. select one: a. x to the power of negative 4 multiplied by y to the power of negative 2, the whole over x to the power of negative 7 multiplied by y to the power of negative 1. b. x to the power of negative 4 multiplied by y to the power of negative 8, the whole over x to the power of 12 multiplied by y to the power of negative 12. c. x to the power of negative 4 multiplied by y to the power of negative 8, the whole over x to the power of negative 3 multiplied by y to the power of 3. d. x to the power of negative 4 multiplied by y to the power of negative 2, the whole over x to the power of negative 3 multiplied by y to the power of 3.