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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)
What points on the ellipse x2+xy+2y2=1 are furthest from the origin? Let E be the square -½ ≤ x ≤ ½, -½ ≤ y ≤ ½. Estimate ∫Ef(x,y) dA by cutting E into four smaller square.
there are 14 standbys who hope to get seats on a flight but only 6 seats are available on the plane. how many
A company wishes to manufacture a box with a volume of 52 cubic feet that is open on top and is twice as long as it is wide. Find the width of the box that can be produced using the minimum amount of material. Round to the nearest tenth, if necess..
A carpenter is making a brace for a chair. To do so she intersects two pieces of wood to make two sets of vertical angles. The obtuse angles formed are each 145°. What is the measurement of each acute angle formed?
Compute the time and cost
explain why taking a series of markdowns is not the same as taking the total sum of the same markdowns. for example a markdown of 25% followed by a 30% is not the same as a 55% total markdown.
When we have two fractions on either sides of an equality or inequality symbol, we can multiply the numerator on the right hand side (RHS) with the denominator of the left hand side (LHS) and the numerator of LHS with denominator of RHS.
What's the square root of 30 divided by 3? how to do square root problems.
what common trait do the othe numbers share?
A weather balloon is located on a bearing of N 42 E from the western station and a bearing of N 15 E from the eastern station. How far away is the balloon from the eastern station? From the Western Station?
Let L:R^n -->R^n be a linear operator on R^n. suppose that L(x) = 0 for some x does not equal 0. Let A be the matrix representing L with respect to standard basis. Show that matrix A is singular.
find the solution of the given linear equation.a parachutist exits a plane at 1067 m.nbsp she counts a specified number
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