A fissure in the earth appeared after an earthquake. To measure its vertical depth, a stone was dropped into it, and the sound of the stone's impact was heard 3.3 seconds later. The distance (in feet) the stone fell is given by
, and the distance (in feet) the sound traveled is given by
style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_1f6ad921c7b54e41a273643e1" />. In these equations, the distances traveled by the sound and the stone are the same, but their times are not. Using the fact that the total time is 3.3 seconds, find the depth of the fissure. Round your answer to two decimal places.
?
A. 94.19 feet
B. 91.00 feet
C. 121.98 feet
D. 126.38 feet
E. 126.48 feet
Answer: C
You might also like to view...
Solve the problem.Find the sum of the series .[Hint: Write the series as 1 +
= 1 +
+
.]
A. 4e - 5 B. e + 3 C. 3(e - 1) D. 2e
Use two equations in two variables to solve the following problem.Maria and Susan pool their resources to buy several lottery tickets. They win $400,000! They agree that Susan should get $50,000 more than Maria, because she gave most of the money. How much will Maria get?
A. $230,000 B. $225,000 C. $75,000 D. $175,000 E. $90,000
Solve the initial value problem. =
, y(0) = -3
A. y= tan-1 - 3
B. y = tan-1
C. y = cot-1
- 3
D. y = tan-1
- 3
Multiply.(-4x4y4)(-2x4y2)
A. 8x6y8 B. 8xy6 C. 8xy8 D. 8x8y6