Questions in Grade High-school

Questions in Grade High-school

[Homework Help] How do you prove the identity: \[ \cos^2x - \sin^2x = 1 - 2\sin^2x \]

[Homework Help] Which of the following is LEAST likely to result in speciation? A. Random mating among members of a large population of a species B. Occurrence of hybridization between individuals from two different species C. Development of different mating behavior by some members of a species D. Emigration to a specialized microenvironment by some members of a species E. Formation of a physical barrier that blocks gene flow between members of a species

[Homework Help] Where sugar concentration is high, what is the source of water taken in by the phloem?

[Homework Help] If water flows into a rectangular tank at the rate of 6 cubic feet per minute, how long will it take to fill the tank, which measures 18'' x 32'' x 27''?

[Homework Help] Which right is more important: freedom of speech or freedom of the press?

[Homework Help] I am a 3-digit number that is even. - My hundreds and ones digits are the same and have a sum of 8. - My tens digit is 2 less than my ones digit. What number am I?

[Homework Help] What does DNA replication mean?

[Homework Help] Find the volume of a sphere with a radius of \(\frac{3}{4}k\). When cubing \(\frac{3}{4}\), do you cube both the numerator and the denominator?

[Homework Help] What year did the Middle Passage and the transatlantic slave trade start?

[Homework Help] What is the sum of the infinite geometric series? \[ \frac{1}{2} + \frac{1}{4} + \frac{1}{8} + \frac{1}{16} + \ldots \]