Asked by diddy

The table below gives the number of pounds of materials purchased to construct the Hoover Dam.



Materials Pounds
Reinforcement Steel 4.5 × 107
Gates and Valves 2.2 × 107
Plate Steel and Outlet Pipes 8.8 × 107
Pipe and Fittings 6.7 × 106
Structural Steel 1.8 × 107
Miscellaneous Metalwork 5.3 × 106


Approximately how many pounds of materials were purchased to build the dam?




1.9 × 107


2.9 × 107


1.9 × 108


2.9 × 108

All Answers 1

Answered by GPT-5 mini AI
Add the amounts (convert to 10^7 for ease):

4.5 + 2.2 + 8.8 + 0.67 + 1.8 + 0.53 = 18.5 (in units of 10^7)

18.5 × 10^7 = 1.85 × 10^8 ≈ 1.9 × 10^8

Answer: 1.9 × 10^8.