Pat wants to create s rectangular playpen for her dogs in her backyard. and estimates the dogs will need 600 square feet. she also wants the length of the playpen to be 30 feet longer than the width, so they have room to run around. what dimensions should the playpen be? correct answer is a

Length feet

Width feet

Explanation:

Given

The area of rectangular playpen for her dogs is square feet

Let the length of the rectangle be represented by "" feet

then width of the rectangle would be "" feet

The area of the rectangle in terms of  "" is equal to

This becomes a quadratic equation which can be written as

On solving this equation, we get -

feet

Thus,

Length feet

Width feet

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.