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xz_007 [3.2K]
2 years ago
5

The mean length of time, per week, that students at a certain school spend on their homework is 24.3 hours, with a standard devi

ation of 1.2 hours. Assuming the distribution of study
imes is normal, what percent of students spend more than 25 hours per week on homework?
Round
your answer to the nearest hundredth.
Mathematics
1 answer:
bixtya [17]2 years ago
4 0

Answer:

21.1%

Step-by-step explanation:

(25 - 24.3) / 1.2 = 0.5833 z score = 78.9%

You need the percent that spend more than 25 hrs per week, so 100 - 78.9 = 21.1%

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Select the scenarios that will result in a positive slope. Select all that apply.
34kurt

Answer:

A

Step-by-step explanation:

because it'll have positive x and y intercepts

6 0
3 years ago
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What is the difference in finding the exact vs approximate volume?
Bess [88]

Answer:

An exact number is one that has no uncertainty. An example is the number of tires on a car (exactly 4) or the number of days in a week (exactly 7). An approximate number is one that does have uncertainty. ... The number can be the result of a measurement.

Step-by-step explanation:

8 0
3 years ago
Demarco paid $3.19 per gallon both times that he stopped for gas on a weekend trip. He bought 12.53 gallons of gas the first tim
maks197457 [2]
He paid 3.19 per gallon both times......first time he bought 12.53 gallons....next time he bought 11.86 gallons

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5 0
3 years ago
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Someone explain this to me
e-lub [12.9K]

Answer: a) y = f(x - 6)

              b) y = f(x) - 2

<u>Step-by-step explanation:</u>

For transformations we use the following formula: y = a f(x - h) + k

  • a = vertical stretch
  • h = horizontal shift (positive = right, negative = left)
  • k = vertical stretch (positive = up, negative = down)

a) f(x) has a vertex at (-1, 1)

    M has a vertex at (5, 1)

    The vertex shifted 6 units to the right  → h = +6

Input h = +6 into the equation and disregard "a" and "k" since those didn't change.     ⇒ y = f(x - 6)

b) f(x) has a vertex at (-1, 1)

    N has a vertex at (-1, -1)

    The vertex shifted down 2 units  → k = -2

Input k = -2 into the equation and disregard "a" and "h" since those didn't change.     ⇒ y = f(x) - 2

7 0
4 years ago
Graph of the figure after the indicated translation
Arlecino [84]

After the translation performed J is now (-2,-2), M is now (-1,-4), K is now (4,1), and L is now (5,-1).

Hope this helps!

6 0
4 years ago
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