30x4 − 20x3 + 15x2
Mathematics, 25.08.2019 08:10 chels6058
Choose the correct simplification of the expression −5x2(4x − 6x2 − 3).
30x4 − 20x3 + 15x2
−11x4 − x3 − 8x2
−30x4 + 20x3 − 15x2
30x4 + 20x3 + 15x2
Answers: 2
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Aregular hexagon rotates counterclockwise about its center. it turns through angles greater than 0° and less than or equal to 360°. at how many different angles will the hexagon map onto itself?
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Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.
Answers: 3
Choose the correct simplification of the expression −5x2(4x − 6x2 − 3).
30x4 − 20x3 + 15x2
30x4 − 20x3 + 15x2
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