Solve.In a pole vaulting competition, Jesse vaulted 3.9 meters. How many centimeters did he vault?
A. 3900 cm
B. 0.39 cm
C. 390 cm
D. 39 cm
Answer: C
Mathematics
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Solve the problem.For what values of t is r(t) = cos ti + sin tj + 
k continuous?
A. {t ? ?: -5 < t < 5} B. {t ? ?: t ? 5} C. {t ? ?: -5 ? t} D. {t ? ?: -5 ? t ? 5}
Mathematics
Solve the problem. In triangle ABC, angles A and B have the same measure, while the measure of angle C is 30° larger than each of A and B. What are the measures of the three angles?
A. A and C: 60°; B: 60° B. A and B: 60°; C: 60° C. A and B: 80°; C: 50° D. A and B: 50°; C: 80°
Mathematics
Find the measure of the angles.
?A = (2x + 1)°, ?B = (4x + 5)°
A. 60° and 120° B. 55° and 125° C. 59° and 121° D. 68° and 112°
Mathematics
Solve the equation by the square root property.(x + 1)2 = - 3
A. {2, 4}
B. {-1 ± 
}
C. {-1 - 
}
D. {-1 ± i
}
Mathematics