In ijk notation, the boat has velocity (relative to the water)
and the current has velocity (relative to the Earth)
The boat's "true" velocity (relative to the Earth) satisfies
so that
which translates to a speed of about 16.5 km/hr in a direction of 25.48º South of East.
Answer:
He worked 9 hours that week.
Step-by-step explanation:
A.
Use PEMDAS
to get rid of the 3/4, divide both sides by 3/4 (.75) and 30 becomes 40
12x + 4 = 40
Subtract 4 from each side to cancel the - 4
12x = 36
Divide both sides by 12 to get rid of the 12
X = 3
Answer With Step-by-step explanation:
C: 3
This is because 6 3/5 is a positive number, and 6 3/5 ÷ 2 1/5 = 3
Hope this was helpful! (brainliest please)
Step-by-step explanation:
The sets of numbers are groupings where they have a series of properties. There are several number sets, which in turn are a subset of the reals, which are all those that we can represent on a number line.
The sets of numbers are:
Natural numbers: they are the ones we use to count.
Whole numbers: are the positive integers.
Integers: all natural numbers and their opposites,