t=45min
d=4km
45min/60min = 0.75 hours
v=d/t
v=4km/0.75hours
v=5.33km/hour. So the answer is B. 45 minutes.
Well it would be -5, right? Because you lost (-) $5, you would have a negative five dollars.
a) The fire burnt 840.6 square miles
b) The fire burnt 16.8 tempe
Step-by-step explanation:
1 square mile = 640 acres
a) to find how many square miles did the fire burn:
Total area the fire burn = 538000 acres
1 square miles = 640 acres
Concert the acres into square miles
538000/ 640 = 840.6 square miles
The fire burnt 840.6 square miles
b) 50 square miles= 1 temperatures
The no. Of tempe the fire burn = 840.6/50
= 16.8 tempe
The fire burnt 16.8 tempe
Answer:

Step-by-step explanation:
Component form of a vector is given by
, where
represents change in x-value and
represents change in y-value. The magnitude of a vector is correlated the Pythagorean Theorem. For vector
, the magnitude is
.
190 degrees counterclockwise from the positive x-axis is 10 degrees below the negative x-axis. We can then draw a right triangle 10 degrees below the horizontal with one leg being
, one leg being
, and the hypotenuse of the triangle being the magnitude of the vector, which is given as 9.
In any right triangle, the sine/sin of an angle is equal to its opposite side divided by the hypotenuse, or longest side, of the triangle.
Therefore, we have:

To find the other leg,
, we can also use basic trigonometry for a right triangle. In right triangles only, the cosine/cos of an angle is equal to its adjacent side divided by the hypotenuse of the triangle. We get:

Verify that
Therefore, the component form of this vector is 
Answer:
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