A bag contains only red, green, brown and yellow marbles. The probabilities of selecting each colour are shown below.

ColourRedGreenBrownYellow
Probability
x
3
x
5
x
4
x
Find the probability of selecting a red marble.

Me n o w. i need t h i s. 10 points

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

Two florida panthers were weighed. one weighs 6x+21 pounds and the two together weigh 14x+11 pounds how much does he other panther weigh alone