Use similar triangles to solve the application.To find the height of a building, a 5 ft tall man places a mirror on the ground. He knows the distance from the mirror to the top of the building is 78 ft. He also knows the distance from the top of his head to the mirror is 13 ft. Because of the reflection property of mirrors we know ?ABC ~ ?DEC. Find the height of the building.
A. 15.6 ft
B. 202.8 ft
C. 30 ft
D. 42 ft
Answer: C
Mathematics
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Solve the problem.Maria invested $5000 at 9% compounded annually. How much will be in the account after 4 years? Round to the nearest cent.
A. $5151.70 B. $7057.91 C. $5003.36 D. $2057.91
Mathematics
Solve the system by the substitution method.
A. (
, 
), (-
, -
)
B. (
, -
)
C. (
, -
), (-
, 
)
D. (
, 
)
Mathematics
Solve for x.18x = 1
A. x = 0
B. x = 
C. x = 1
D. ?
Mathematics
Identify the place occupied by the underlined digit.59,9
9,999
A. Thousands B. Hundred thousands C. Ten millions D. Ten thousands
Mathematics