Question : Write the given terms as like radicals, if possible. If any variables exist, assume that they are positive. : 2163689
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Write the given terms as like radicals, if possible. If any variables exist, assume that they are positive.
101) 3√(x - 10) = 5
A) -5
B) -135
C) 135
D) 115
Solve the equation.
102) x2 = 4
A) -2
B) 3
C) ± 2
D) 2
103) 4x2 = 16
A) 2
B) ±2
C) 5
D) -2
104) (12 - 6x)2 = 900
A) 2, 7
B) 3, 7
C) 0, 2
D) -3, 7
105) (4 - 10x)3 = -1000
A) - (7/10)
B) (7/10)
C) - (7/5)
D) (7/5)
Solve the equation graphically. Approximate the solution to the nearest hundredth, if appropriate.
106) √(q + 1) = 9
A) 100
B) 82
C) 81
D) 80
107) √(8q - 7) = 7
A) 7
B) (21/4)
C) 49
D) (49/8)
108) √(7q + 8) = 8
A) 8
B) (64/7)
C) 64
D) (72/7)
109) √(5x) + 2 = 7
A) (53/5)
B) 5
C) 1
D) 25
110) 3√(t) = -2
A) -8
B) 4
C) 3√(-2)
D) -6
111) x = √(x + 13) + 7
A) 3
B) 3, 12
C) No solutions
D) 12
112) 2x1/2 - 7 = 5
A) 6
B) 36
C) 144
D) No solutions
113) x3/2 = √(x + 5) - 3
A) All real numbers
B) 0.5
C) No solutions
D) 1.67
Solve the formula for the indicated variable.
114) T = 2π√((L/K)) for L
A) L = (KT/2π)
B) L = (KT2/2π)
C) L = (K2T2/4π2)
D) L = (KT2/4π2)
115) r = √((S/4π)) for S
A) S = (r2/4π)
B) S = 16π2r2
C) S = 4πr
D) S = 4πr2
116) L = √((2W/k)) for k
A) k = (2W/L2)
B) k = (4W2/L2)
C) k = (2W/L)
D) k = 2WL2
If the sides of a triangle are a, b, and c and they satisfy a2 + b2 = c2, the triangle is a right triangle. Determine whether the triangle with the given sides is a right triangle.
117) a = 12, b = 16, c = 20
A) Yes
B) No
118) a = 8, b = 10, c = 14
A) Yes
B) No
119) a = 5, b = 9, c = 14
A) Yes
B) No
120) a = 7, b = 24, c = 25
A) Yes
B) No