Pls help quick!

A satellite orbiting Earth at an orbital radius r has a velocity v. Which represents the velocity if the satellite is moved to an orbital radius of 5r?(1 point)

15√v
1
5
v

15v
1
5
v

5√v
5
v

5v

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

What is the probability of throwing several dice with sum equal to 6 (six)? show the ways of possibilities for sum 6 (as the numerator) and the ways of throwing n dices for n = 1, 2, 3, 4 or 5 as denominator for all the questions to earn full credits. (a)throw one die, (b) throw two dice, (c) throw three dice (d) throw 4 dice, (e) throw 5 dice

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c