Solve the proportion problem.A photograph measuring 2 inches by 3.8 inches is enlarged to increase the original 2-inch dimension to 5 inches. When this is done, how long does the original 3.8-inch dimension become? (Round your answer to the nearest tenth, if necessary.)
A. 10 in.
B. 1.3 in.
C. 9.5 in.
D. 2.6 in.
Answer: C
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Strontium 90, a radioactive isotope of strontium, is present in the fallout resulting from nuclear explosions. It is especially hazardous to animal life, including humans, because, upon ingestion of contaminated food, it is absorbed into the bone structure. Its half-life is 27 years. If the amount of strontium 90 in a certain area is found to be eight times the "safe" level, find how much time must elapse before an "acceptable level" is reached. ?
A. 81 year(s) must elapse before an "acceptable level" is reached. B. 78 year(s) must elapse before an "acceptable level" is reached. C. 66 year(s) must elapse before an "acceptable level" is reached. D. 57.3 year(s) must elapse before an "acceptable level" is reached.
Evaluate without using a calculator.
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Fill in the blank(s) with the appropriate word(s).
Identify the polynomial as a monomial, binomial, trinomial, or none of these. Give its degree.14x2
A. Binomial, degree 14 B. Monomial, degree 2 C. Monomial, degree 14 D. Binomial, degree 0
Write a numerical expression for the phrase and simplify it.The product of 3 and -6, added to -8
A. (-8 + 3)(-6); 30 B. (-8) + (3)(-6); -26 C. (-8)(-6) + 3; 51 D. (-8)(-6)(3); 144