Solve the problem.To find the distance AB across a river, a distance BC of 693 m is laid off on one side of the river. It is found that B = 106.2° and 
Find AB. Round to the nearest meter.
A. 210 m
B. 257 m
C. 260 m
D. 213 m
Answer: B
Mathematics
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Determine whether or not the function is one-to-one.f(x) = 4x - 1
A. No B. Yes
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Use the product-to-sum and sum-to-product identities to prove the stated identity.cot 
cot 
= 
What will be an ideal response?
Mathematics
When a stone is dropped into a deep well, the number of seconds until the sound of a splash is heard is given by the formula  figure 1.png)
, where x is the depth of the well in feet. For one particular well, the splash is heard 10 seconds after the stone is released. How deep (to the nearest foot) is the well?
A) 700 ft B) 900 ft C) 1,167 ft D) 2,000 ft
Mathematics
Use the Vertical Line Test to determine if y is a function of x. 
A. y is not a function of x B. y is a function of x
Mathematics