Simplify.-15 + 45 ÷ (-3)
A. 10
B. -10
C. -30
D. 30
Answer: C
Mathematics
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Assume that the sequence converges and find its limit.a1 = -3, an + 1 = 
A. 8 B. -9 C. -3 D. 4
Mathematics
Solve the problem.A building 250 feet tall casts a 90 foot long shadow. If a person looks down from the top of the building, what is the measure of the angle between the end of the shadow and the vertical side of the building (to the nearest degree)? (Assume the person's eyes are level with the top of the building.)
A. 70° B. 20° C. 69° D. 21°
Mathematics
Fill in the blank with one of the words or phrases listed below.
The formula 
where y = ax2 + bx + c is called the 
formula.
A. quadratic B. completing the square C. vertex D. square root
Mathematics
Find the LCM of the set of numbers.18, 24, 56
A. 1512 B. 432 C. 504 D. 1008
Mathematics