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OpenStudy (this):

Which of the following is a compound machine? a,a ramp b, a wheel and axle c, a pulley d, a pair of scissors

OpenStudy (this):

can any one help me

OpenStudy (kropot72):

A compound machine is a combination of two or more simple machines. There are 6 kinds of simple machine: 1. A lever. 2. A pulley. 3. An inclined plane. 4. A wheel and axle. 5. A wedge. 6. A screw. You should be able to find the correct choice by using the information above.

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