The formula W= 0.3x + 46.6 models the average
number of hours worked by
American workers per week when W is the hours worked and x is the number
years since 1980. When will we average 55 hours per week?
The average American is probably working 55 hours per week
now, 28 years after 1980.
Einstein’s formula E = mc2, relates energy
and mass with the speed of light. E
represents energy in ergs, m represents
mass in grams, and c is the speed of light in
centimeters per second. The speed of light
in a vacuum is 3 × 1010 meters per second.
The square of 3 × 1010 is 9 × 1020 . 1 gram
of matter will contain 9 × 1020 ergs of
energy. The energy in 1 gram of matter
could move another gram of matter
559,234,073,013,000 miles at a rate of 1
centimeter per second.
Solve the equation E = mc2for m.
Solve the equation E = mc2 for c2.
P= 2l+2w is the formula for calculating the perimeter of a
rectangle. l represents the length of a side of the rectangle and
w represents the width.
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