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1) A short airplane trip between two cities took 30 minutes when traveling with the wind. The return trip took 45 minutes when traveling against the wind. If the speed of the plane with no wind is 320 mph, find the speed of the wind and the distance between the two cities (hint: pay attention to units).
2) One morning, Justin drove 3 hours before stopping to eat lunch. After lunch, he increased his speed by 10 mph. If he completed a 450-mile trip in 8 hours of driving time, how fast (in miles per hour) did he drive in the morning?
3) A high-speed train makes a 320 mile nonstop run between two major cities in 512 hours. The train travels 80 mph in the country, but safety regulations require that it travel only 20 mph when passing through smaller, intermediate cities. How many hours are spent traveling through the smaller cities?
question to avoid hitting any rocks below a cliff diver jumps up and out. the equation h -16t2 4t 26 describes her
At a 5 percent level of significance, test to see if there is a significant difference in the average amount spent at the two schools. Write your conclusion?
Blue Valley College has 680 female students. This is 40% of the total student body. How many students attend Blue Valley College?
During the first part of a trip, a canoeist travels 61 miles at a certain speed. The canoeist travels 21 miles on the second part of the trip at a speed 5 mph slower. The total time for the trip is 3 hrs. What was the speed on each part of the tri..
Find four large cities around the world and an approximate percentage rate of population growth for the countries in which the cities are located.
The length of a rope required to wrap around a circular wheel exactly is 8.8cm. What is the diameter of the wheel to the nearest tenth?
suppose a math faculty member believes that the standard deviation for her midterm is 6 points. one of her best student
one on each end. The radius of the cylinder is the same as the radius of each half-sphere. What is the volume of a propane tank of cylindrical length 10 ft and radius 5 ft, correct to the nearest whole cubic foot?
a rancher needs to enclose two adjacent corrals, one for cattle and one for sheep. If the river forms one side of the corrals and 420 yd of fencing is available, find the largest total area that can be enclosed.
Shirley Cicero has $16,000 invested in Boeing and GE stock. The Boeing stock currently sells for $30 per share and the GE stock for $70 per share. If GE stock triples its value and the Boeing stock goes up 50%, her stock will be worth $34,5000. Ho..
Find all the rational zeros of f(x). Then solve f(x) =0. F(x) = x^3 -13x+12 f(x) =0 has solutions x=____. Use commas to seperate answers as needed.
Total number of ways a customer can place the order, A bagel shop offers 14 varieties of bagels, 11 flavors of cream cheese, and 15 flavors of coffee. How many different orders for a bagel
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