Solve. Remember to insert units when writing your answer.A student mistakenly added 79 cl of acid to a mixture instead of 27 ml. Find the excess amount of acid.
A. 763 ml
B. 52 ml
C. 7873 ml
D. 78.73 ml
Answer: A
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Use a table of square roots or a calculator to approximate to the nearest thousandth.
A. 5.289 B. 5.292 C. 28.000 D. 5.297
Solve the problem.The population growth of an animal species is described by 
where t is measured in months. Find the population of this species in an area 6 months after the species is introduced.
A. 470 B. 74 C. 704 D. 240
Solve the problem.On a Touch-Tone phone, each button produces a unique sound. The sound produced is the sum of two tones, given by y = sin (2?lt) and y = sin (2?ht)where l and h are the low and high frequencies (cycles per second) shown on the illustration.
The sound produced is thus given by y = sin (2?lt) + sin (2?ht)Write the sound emitted by touching the 9 key as a product of sines and cosines.
A. y = 2 sin (357?t) cos (2061?t) B. y = 2 sin (2061?t) cos (357?t) C. y = 2 sin (2329?t) cos (625?t) D. y = 2 sin (625?t) cos (2329?t)
Determine the value of C such that the function is a probability mass function.f = {(6, 0.2C), (8, 0.2), (10, 0.47), (12, 0.3C)}
A. C = 0.86 B. C = 0.33 C. C = 0.165 D. C = 0.66