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Suppose that cities X and Y are exactly 750 miles apart. On a certain day, Anne leaves from city X traveling at a rate of 75 mph towards city Y. At the same time, and taking the same route, Bob leaves city Y traveling at a rate of 50 mph towards city X. How far from city Y will Anne and Bob pass each other?
a) Write an equation to help you solve this problem. You may use variables d for distance or t for time.
Answer:
b) Solve this equation and use it to find d, the distance from city Y at which they pass. Include the appropriate units in your answer.
Answer: d=
A jeweler has 7 rings, each weighing 11 g, made of an alloy of 15 percent silver and 85 percent gold. He decides to melt down the rings and add enough silver to reduce the gold content to 70 percent. How much silver should he add?
a) Write an equation for the total amount of gold in the mixture. Use s to represent the amount of silver added.
b) Solve this equation for s. Include the appropriate units in your answer.
Answer: help (units)
If a 2 lb weight stretches a spring 15 inches and a 12 lb weight stretches the same spring 20 inches, what is the length of the spring with no weight attached.
A boat is headed across a river with a velocity relative to water) that can be represented as (6.5 + 1.7) mi/h. The velocity of the river current can be represented as (- 1.1 - 4.3j) mi/h. Express the resultant velocity of the boat in polar from.
for the remaining 30% you choose randomly among the 5 answers. What percent of the answers should you expect to get right?
How many revolutions will the graph of the circular helix r(t)=acosti + asintj + 0.2tk make in a distance of 10 units measured along the z-axis?
Given a normal distribution, what is the value of Z that represents the 39th percentile?
An air ambulance is travelling from Barrie to Toronto. Toronto is located 90 km [S5°E] of Barrie. If the wind is blowing from the South with a velocity of 62 km/h, and the plane's air speed is 375 km/h, what direction must the pilot fly to make it..
jared has to go to school. after school he needs to stop at the grocery store before heading home. jareds school is 5.8
The weight of a product is normally distributed with a mean of four ounces and a variance of 0.25 "squared ounces".
Find the rate of change of the searching period with respect to temperature T. When does this rate equal zero? What (if anything) occurs when
block of metal has a width of 3.2 rm cm, a length of 17.1 rm cm, and height of 4.9 cm. Its mass is 1.5 kg. Calculate the density of the metal.
If Line segment B H || Line segment E G , find the m Angle E D F .
christmas is coming and your son lets it be known that he wants a football made from a certain brand name that he does
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