## Use Heron’s formula to find the area of the triangle.

Use Heron’s formula to find the area of the triangle. Round to the nearest square unit. 17) a = 10 meters, b 14 meters, c = 6 meters A) 48 square meters B) 12 square meters C) 23 square meters D) 46 square meters
Polar coordinates of a point are given. Find the rectangular coordinates of the point. 18) (-3, -13V)
Ai* 4) .4* -*) Di*
Convert the rectangular equation to a polar equation that expresses r in terms of 0. A) r(cos 0 + sin 0) . 2 B) r 4
Find the specified vector or scalar. A) 151+ 8j B) 91+ 5j C)13i+ 5j D) -15i+ 5j
Use the given vectors to find the specified scalar. 21) = -14i + 5j and = 10i – 8j; Find u v. A) -140 B) -180 C) -100 D) -40
Find the angle between the given vectors. Round to the nearest tenth of a degree. 22)u=i-j,v, 6j A) 101.3. B) 11.3° C) -11.3° D)106.1°
Find the center, foci, and vertices of the ellipse.
A) center at (-1, 2) vertices at (-2, -1), (6, -1) C) center at (2, -1) vertices at (4, -1), (-4, -1)
B) center at (2, -1) vertices at (-2, -1), (6, -1) D) center at (2, -1) vertices at (4, -1), (-4, -1)

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. Write 6.3% as an equivalent decimal. (Points : 1) 6.3        0.063        0.63        630        None of the above   Question 2. 2. Write 0.43 as an equvalent fraction. (Points….