Solve the system using elimination: 1 3x+3y=27 x-37=-11 2 4x-7y=3 x-7y=-15 3 2x+3y=9 x+5y=8 4 3x+2y=17 2x+5y=26

4. a spring scale is constructed so that each 0.10-n increment is separated by 0.50 cm. what spring constant is necessary for the scale to be accurate? -1.0n/cm -0.10n/cm -9.8 n/cm -0.20n/cm

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16