Solve the problem.A triangle has a base of length 3x + 1 and a height of x + 6 and has an area of 45 square units. Find the length of base and height. (A = 
BH)
A. base = 3 units; height = 30 units
B. base = 3 units; height = 15 units
C. base = 10 units; height = 9 units
D. base = 9 units; height = 5 units
Answer: C
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Given that the x- and y-coordinates of a moving particle are given by the indicated parametric equations, find the magnitude and direction of the velocity for the specific value of t.x = 
, y = 9t2 + 1, t = 4
A. 72.00, 89.7° B. 72.00, 359.7° C. 9.01, 359.7° D. 9.01, 89.7°
Provide an appropriate response.Iff(x, y) = 
find fy(x, y)
What will be an ideal response?
Solve the problem.A thermometer reading 12°C is brought into a room with a constant temperature of 25°C. If the thermometer reads 17°C after 4 minutes, what will it read after being in the room for 10 minutes? Assume the cooling follows Newton's Law of Cooling: U = T + (Uo - T)ekt.(Round your answer to two decimal places.)
A. 7.15°C B. 24.9°C C. 21.14°C D. 28.86°C
List all numbers from the set that are of the type indicated.
Integers
A. 16, -4
B. 16
C. 16, 
D. 0, -4, 2