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Using Coordinates to compute Perimeters and Areas: Mastery Test
(x2, 42)
(x, y)
(0,0)
What is the area of the triangle in the diagram?
OA / (+ ² + 4, ?) (= ² + y 2)
OB. IV (7,2 – 5,2)(932 – yy?)
oc. V( + 2 + 7, 2) ( = ² + y ²)
OD. 21/(1,2 – 1,2)(y,2 – 4,2)
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Kk

Find the solution of system of equation y= x-4 y=4x+2

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations