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LenaWriter [7]
3 years ago
11

A certain television is advertised as a 41-inch TV (the diagonal length). If the width of the TV is 40 inches, how many inches t

all is the TV?
Mathematics
2 answers:
Bumek [7]3 years ago
6 0

Answer:

9 inches tall

Step-by-step explanation:

Use the Pythagorean theorem: you know the hypotenuse (41) and the leg (40)

a^{2} +40^{2} =41^{2}

Solve for a:

Simplify exponents

a^2+1600=1681

Subtract 1600 from both sides

a^2+1600-1600=1681-1600\\a^2=81

Find the square root

\sqrt{a^2}=\sqrt{81\\}  \\a=9

KengaRu [80]3 years ago
5 0

Answer:

9 inches

Step-by-step explanation:

A^2+b^2=c^2 so

40^2+b^2=41^2

1600+b^2=1681

so b^2=81

so b=9

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