Mathematics, 26.06.2019 02:40 jujulakaeuaws
8! it's timed, i promise it's simple 11. which of the following expressions is true? a. 4^3β’ 4^4 = 412 b. 5^2 β’ 5^3 > 5^5 c. 3^2 β’ 35 < 3^8 d. 5^2 β’ 54 = 58 12. which of the following expressions is true? a.8^3 β’ 8^2 < 8^4 b. 4^4 β’ 4^4 = 4^16 c. 2^2 β’ 2^6 < 2^8 d. 3^3 β’ 3^3 > 3^5 write the value of the expression. 13. 3^4/3^4 a. 3 b. 0 c. 1 d. 4 14. 4^7/4^9 a. β16 b. 1/16 c. 1/8 d. 8 multiply. write the result in scientific notation. 15. (2.3 β’ 10^1)(7 β’ 10^6) a. 1.61 β’ 10^7 b. 1.61 β’ 10^8 c. 9.3 β’ 10^6 d. 9.3 β’ 10^7 16. (1.7 β 10β4)(5 β 10β5) a. 8.5 β 10^β9 b. 8.5 β 10^20 c. 6.7 β 10^β9 d. 6.7 β 10^20 simplify the expression. 17. 7t4 β 7t4 a. 49t^8 b. 14t^4 c. 49t^16 d14t^8 simplify the expression. 18. βx(7x β 8) a. 6x^2 β 9x b. β7x β 8x c. β7x^2 + 8x d. 7x + 8x simplify the expression. 19. 4k2(β3k2 β 4k + 5) a. β12k^4 β 16k^3 + 20k^2 b. 12k^4 β 16k^3 + 9k^2 c. β12k^3 + 20k d. k4 + 9k^2 simplify the expression. 20. (2k + 1) (k β 4) a. 2k^2 β 7k + 4 b. 2k^2 β3k + 4 c. 2k^2 + 9k + 4 d. 2k^2β 7k β 4
Answers: 1
Mathematics, 21.06.2019 19:30
ΠΡf x = y and y= z, which statement must be true? ΠΎΠ°. -x = -2 b. x= z ΠΎΡ. βx = 2 od. 2= x
Answers: 3
Mathematics, 22.06.2019 02:00
The function h (t) = -16t squared + 28t + 500 represents the height of a rock t seconds after it's propelled by a slingshot what does h (3.2) represent?
Answers: 1
Mathematics, 22.06.2019 02:30
If wxyz is a square, which statements must be true? plz < 3
Answers: 1
Mathematics, 22.06.2019 02:30
An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 120 lb and 161 lb. the new population of pilots has normally distributed weights with a mean of 125 lb and a standard deviation of 28.1 lb. a)if a pilot is randomly selected, find the probability that his weight is between 120 lb and 161 lb.the probability is approximately? b. if 36 different pilots are randomly selected, find the probability that their mean weight is between 120 lb and 161 lb. the probability is approximately? c. when redesigning the ejection seat, which probability is more relevant? . part (b) because the seat performance for a single pilot is more important. b. part (b) because the seat performance for a sample of pilots is more important. c. part (a) because the seat performance for a sample of pilots is more important. d. part (a) because the seat performance for a single pilot is more important.
Answers: 3
8! it's timed, i promise it's simple 11. which of the following expressions is true? a. 4^3β’ 4...
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