7. What percent of the sophomores spend more than 60 minutes on homework per night? 8. What is the range of times that the middle 50% of the sophomores spend on homework per night? 9. How many sophomores do not do homework? 10. What percent of the sophomores spend less than 20 minutes per nig on homework?

Q: verify that A + B = B + A

A:

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A: The given problem is to evaluate the given series sum of the given series 1+1/32+1/52+... with given…

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A: Topic:- algebra  Lets assume (3x+5) divided by 6

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Q: If the largest of 89 consecutive integers is 327, what is the smallest?

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Q: This answer has no numbers in it and it needs to be reformatted so I can actually see the answers

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Q: I2x-1 1. \sx+61

A:

Q: not all questions are answered, and are incorrect

A: According to me all questions' answered are correct

Q: Find a . b. a = (5, -5, 2), b =(3, 4, -1)

A: The dot product of a=a1, a2, a3 and b=b1, b2, b3 is: a·b=a1b1+ a2b2+ a3b3

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Q: ome reason the correct answer is 50178

A: Mean (μ) = $43,000 Standard Deviation (σ) = $5,600

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Q: If A = A-1 = -5 15 4 -11 -1 3 14 -12, then 3

A:

Q: A realtor uses a lock to store the keys to a house that is for sale. The access code for the lock…

A: In this case, the number of ways to fill 1st digit is 9 except the digit 5.

Q: what is 12+12=

A: Here we have to find the value of 12+12.

Q: If the largest of 89 consecutive integers is 327, what is the smallest?

A:

Q: A realtor uses a lock box to store the keys to a house. The access code for the lock box consists of…

A: A permutation is the arrangement of elements. For example, three persons viz. A, B and C can be…

Q: The following is known about three numbers: Three times the first number plus the second number plus…

A: So, we have the system of equations as : 3a + b + 2c = 5 a + 3c - 3b = 2 2a + 3b - c = 1 So,…

Q: The accuracy of a census report on a city in southern California was questioned by some government…

A: Unanswered parts:   Level of significance:   Given that the level of significance is 1%. Thus, the…