Solve the problem.A balloon is secured to rope that is staked to the ground. A breeze blows the balloon so that the rope is taut while the balloon is directly above a flag pole that is 20 feet from where the rope is staked down. Find the length of the rope if the altitude of the balloon is 80 feet. (Leave answer in simplified radical form.)
A. 10
ft
B. 100 ft
C. 20
ft
D. 20
ft
Answer: C
Mathematics
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Find the y-intercepts for the parabola whose equation is given. If the y-intercepts are irrational, round your answers to the nearest tenth.y = 2x2 + 4x - 48
A. y-intercept (0, -48) B. y-intercept (0, 4) C. y-intercept (0, 48) D. y-intercept (0, -6)
Mathematics
Solve the problem.Yearly sales of an electronic device S(t), in millions of dollars, t years after 1996 can be estimated by S(t) = 200 ? 3t .What is the doubling time for the yearly sales?
A. 1.3 yr B. 0.6 yr C. 0.7 yr D. 5.5 yr
Mathematics
Solve the equation.x = log10 0.0000001
A. 
B. 
C. {7}
D. {-7}
Mathematics
Find x.log4 x = log4 3
A. x = 3
B. x = -3
C. x = 4
D. x = 
Mathematics