07/22/19

#### Use the row operations to solve the system.

x - y = 1y - z = 0x + z = 1A. The solution set is { _, _, _}(type an exact answer in simplified form. If there are infinitely many solutions, type an expression involving z for each coordinate... more

12/09/16

If sin(2x+12) = cos(4x-6), then solve for x on the interval [0,180)

11/03/16

#### What property of an object is expressed by the measurement of an item's mass per unit volume?

i dont know what the property of an object is

10/23/16

#### You need a 25% alcohol solution. On hand, you have a 375 mL of a 60% alcohol mixture. How much pure water will you need to add to obtain the desired solution?

You need a 25% alcohol solution. On hand, you have a 375 mL of a 60% alcohol mixture. How much pure water will you need to add to obtain the desired solution?

10/02/16

#### lim x?p of 6 sin(x + sin x)

lim x→π of 6 sin(x + sin x)

10/02/16

09/27/16

#### Leaves 4:50 PM and is driving at an average speed of 30 mph. average speed of 40 mph and leaves 5:20 PM. the same point, after how many hours will they meet?

Peter started driving at 4:50 PM and is driving at an average speed of 30 mph.  Dina is driving at an average speed of 40 mph and she started driving at 5:20 PM. If they started driving from the... more

09/27/16

#### Paul's dad is 5 times as old as Paul. In 3 years, Paul will be 1/4 his dad's age. What are their ages now?

Paul's dad is 5 times as old as Paul. In 3 years, Paul will be 1/4 his dad's age. What are their ages now?

09/24/16

09/07/16

#### d = 217 meters apart, start walking toward each other at the same instant at rates of 1.5 m/sec and 2 m/sec, respectively (see the figure).

When will they meet? How far will each have walked?child with the rate 1.5 m/sec mchild with the rate 2 m/sec m

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