It says to solve each proportion which i forgot how to do. .

9 over 15 = x over 10

c over 14 = 6 over 21

0.2 over 1.5 = 2 over d

2x over 6 = 4x+8 over 15

Need ! give step by step solutions on how to solve number one [tex]\frac{9-2\sqrt{3} }{12+\sqrt{3} }[/tex] number two [tex]x+4=\sqrt{13x-20}[/tex] number three (domain and range) [tex]f(x)=2\sqrt[3]{x} +1[/tex]

Which math sentence can be used to determine if the triangle is a right triangle?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?