Solve the problem.From year 1 to year 2 during a scientific survey, the number of a certain species of frog increased by 6194, bringing the worldwide total to 60,477. How many frogs of that species were there in year 1 of the survey?
A. 116,223 frogs
B. 59,477 frogs
C. 60,677 frogs
D. 54,283 frogs
Answer: D
Mathematics
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Factor completely.9x2 + 43x - 10
A. (x + 5)(9x - 2) B. (x - 5)(9x - 2) C. (2 - 9x)(9x - 2) D. (9x - 12)(9x - 2)
Mathematics
Multiply.(-9) × 3
A. 18 B. -30 C. -18 D. -27
Mathematics
Write the English phrase as an algebraic expression. Let the variable x represent the number.the product of four and eight more than a number
A. (4 + 8)x B. 4 + 8 ? x C. 4(x + 8) D. 4 ? 8 + x
Mathematics
Decide whether the statement is true or false. If it is false, tell why.If k is a negative integer, then x2 = k will have two irrational solutions.
A. True B. False; the equation will have two rational solutions. C. False; the equation will have no real number solutions.
Mathematics