While exercising, Julie found that her heart was beating 12 times every 5 seconds. How many times was it be eating per minute?
2 answers:
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Answer:
Step-by-step explanation:
Perimeter = 2 x (length + width) ------(1)
Perimeter = 124cm
Let length be x
Given width is 2cm shorter than length , that width = x -2
Length = 32cm
Width = 32 - 2 = 30cm
Area = length x width
Answer:
x = 40
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
x² + 30² = 50²
x² + 900 = 2500 ( subtract 900 from both sides )
x² = 1600 ( take the square root of both sides )
x = = 40