Provide an appropriate response.If the radius of a circle is doubled, how is the length of the arc intercepted by a fixed central angle changed?
What will be an ideal response?
s = r?, so if r is doubled then s (the length of the arc) is doubled also.
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Measurements are made at two different times. Find the absolute change and then find the percentage change. Round answers to the nearest tenth if necessary.The population of Placerville grew from 4740 a decade ago to 7040 today.
A. Absolute change: 2300 Percentage change: 32.7% B. Absolute change: 2300 Percentage change: 48.5% C. Absolute change: 32.7% Percentage change: 2300 D. Absolute change: -2300 Percentage change: 48.5%
Find all rational zeros of f. Then (if necessary) use the depressed equation to find all roots of the equation f(x) = 0.f(x) = x3 - 5x2 + 4x + 6
A. {3, -1 - 
, -1 + 
}
B. {-3, 1 - 
, 1 + 
}
C. {-3, -1 - 
, -1 + 
}
D. {3, 1 - 
, 1 + 
}
Find the exact function value if it exists.cot 90°
A. 
B. 0
C. Undefined
D. 1
Write a system of equations for the problem, and then solve the system.Two trains start from towns 129miles apart and travel toward each other on parallel tracks. They pass each other 1.5 hours later. If one train travels 4 mph faster than the other, find the speed of each train.
A. 47 mph; 39 mph B. 45 mph; 41mph C. 35 mph; 51 mph D. 40 mph; 46 mph