Solve the problem.An experimental model for a suspension bridge is built. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers are both 6.25 inches tall and stand 50 inches apart. Find the vertical distance from the roadway to the cable at a point on the road 7.5 inches from the lowest point of the cable.
A. 0.76 in.
B. 2.25 in.
C. 0.36 in.
D. 0.56 in.
Answer: D
Mathematics
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The magnitudes 
, 
, and the angle ? between the vectors v and w are given. Round the requested magnitude or angle to the nearest tenth.
= 8, 
= 13, ? = 64°
Find the angle between v + w and w
A. 40.5° B. 37.2° C. 23.5° D. 79.1°
Mathematics
Determine whether the equation defines y as a function of x. y = 5x2 - 2x + 6
A. function B. not a function
Mathematics
Use the order of operations to simplify the expression.
? 
A. - 
B. 
C. 
D. 
Mathematics
Determine whether the sequence is arithmetic. If the sequence is arithmetic, determine the first term a and common difference d.5, -15, 45, -135, 405, . . .
A. Arithmetic; a = 5, d = -10 B. Not arithmetic
Mathematics