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sweet-ann [11.9K]
2 years ago
9

A school psychologist at a large high school took a random sample of 16 students and asked how much sleep they get on a typical

weekend night. The sample data were roughly symmetric with a mean of 8.75 hours and a standard deviation of 1.5 hours
Mathematics
1 answer:
puteri [66]2 years ago
7 0

Answer:

8.75 +/- 0.657

Step-by-step explanation:

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Which figure is shown
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pyramid

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Translate into an alegbraic expression and simplify if possible.
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7x to the 3 power + x-2x to the 3 power + 5x + 8
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7x^3 + x - 2x^3 + 5x + 8

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3 0
3 years ago
Inventory Heung-Soo is responsible for checking a shipment of technology equipment that contains laser printers that cost $700 e
Alla [95]

Answer:

P + M = 30

700P + 200M = 15000

Number of laser printers = 18

Number of color monitors = 12

Step-by-step explanation:

Let P = number of laser printers

Let M = number of color monitors

Given total number of boxes = 30

⇒ P + M = 30

Given:

  • $700 = cost of laser printer
  • $200 = cost of color monitor
  • $15000 = total cost of order

⇒ 700P + 200M = 15000

Rewrite P + M = 30 to make P the subject:

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Substitute into 700P + 200M = 15000 and solve for M:

⇒ 700(30 - M) + 200M = 15000

⇒ 21000 - 700M + 200M = 15000

⇒ 500M = 6000

⇒ M = 12

Substitute found value for M into P = 30 - M and solve for P:

⇒ P = 30 - 12 = 18

5 0
2 years ago
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