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Questions in Grade High-school

[Homework Help] There once was a farmer who, as part of his route to town, used a rickety old boat to cross a wide river. He took his dog and went to town one day to buy corn. However, not only did he buy some corn, but he also bought a goose that he intended to take home and use to start raising geese. (The farmer was no fool; he already had another goose.) He also knew, however, that his boat was not reliable. It could only handle himself (to row) and one of the other three things he had with him. He feared that if left alone, the dog would eat the corn. How could he get himself and everything else across the river?

[Homework Help] A catering service offers 12 appetizers, 9 main courses, and 7 desserts. A banquet chairperson is to select 8 appetizers, 8 main courses, and 6 desserts for a banquet. In how many ways can this be done?

[Homework Help] A park is shaped like a rectangle with a length of 5 miles and width \(w\). What is a simplified expression for the distance between opposite corners of the park?

[Homework Help] A railroad car with a mass of [tex]1.94 \times 10^4 \, \text{kg}[/tex] moving at [tex]3.28 \, \text{m/s}[/tex] joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at [tex]1.02 \, \text{m/s}[/tex]. What is the velocity after the collision and the total kinetic energy lost?

[Homework Help] Explain why dogs pant during hot summer days using the concept of evaporation.

[Homework Help] What is the purpose of ATP molecules in plant and animal cells?

[Homework Help] A strand of DNA contains the sequence GGC-CAT. What is the complementary strand of mRNA for this sequence?

[Homework Help] The diagram below represents the bright-line spectra of four elements and a bright-line spectrum produced by a mixture of three of these elements. Can someone help me with this one? I dont understand that at all :(

[Homework Help] Which scientific evidence would show that two species of birds are closely related?

[Homework Help] Which formula represents an unsaturated hydrocarbon? Picture I How many pairs of electrons are shared between the two nitrogen atoms? Picture II I NEED EXPLANATION FOR BOTH QUESTIONS, PLEASE HELP ME! :)