The top of a cliff overlooking the ocean is 250 feet above sea level. the sea floor at the foot of the cliff is 40 feet below sea level. a rock falls off the cliff and drops toe the sea floor. what number represents the change in elevation of the rock.

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

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.