Haley is four years younger than her sister missy. Let Missy’s age be x. If the square of missy’s age is increased by twice Haley’s age, the result is 40. Find Haley and Missy’s ages.

Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)