Find the sum.4.2 + [(-4.1) + (-3.6)]
A. 3.7
B. 11.9
C. 4.7
D. -3.5
Answer: D
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Determine whether the events A and B are independent.A balanced die is rolled twice. Event A: Six comes up on the first rollEvent B: Six comes up on the second roll
A. Yes B. No
Find an equation of a parabola that satisfies the given conditions.Horizontal axis; vertex (3, -7); passing through (0, 1)
A. (x + 3)2 = - 
(y - 7)
B. (x - 3)2 = - 
(y + 7)
C. (y + 7)2 = - 
(x - 3)
D. (y - 7)2 = - 
(x + 3)
If A denotes the area of the sector of a circle of radius r formed by the central angle ?, find the missing quantity. If necessary, round the answer to two decimal places.? = 120°, A = 30 square meters, r = ?
A. 5.6 m B. 125.6 m C. 31.4 m D. 5.35 m
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. x - 9
B. 
C. 
D. x + 9