Ashipment containing 5 recorders and 4 harmonicas cost $62. a second shipment containing 10 recorders and 3 harmonicas cost $84. what is the cost of a recorder? and, what is the cost of a harmonica? i need making a system of equations for this problem,

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.