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Gwar [14]
3 years ago
11

Elizabeth wants to change cell phone plans. Before contacting the service provider, she makes a table of her cell phone minutes

used over the course of a week.
Monthly Water Bills
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec
$40 $42 $40 $38 $48 $50 $58 $62
$62 $56
$56 $46
$46 $44 $44
Round the following value
to the nearest minute.

Mathematics
1 answer:
ad-work [718]3 years ago
8 0

Answer:

  • 43 minutes
  • $47

Step-by-step explanation:

<u>1. Cell phone usage</u>

Mon to Sun = 38, 62, 40, 10, 30, 55, 65

  • Mean = (38+62+40+10+30+ 55 + 65)/7 = 43 minutes rounded

<u>2. Water bills</u>

Jan to Dec = $40 $42 $40 $38 $48 $50 $58 $62  $56 $46  $44 $44

  • Mean = (40+42+40+38+48+50+58+62+56+46+44+44)/12 = $47 rounded

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It is important so you can know how your body works. Like how your body takes in food and all just so you know how to design your plan.

Step-by-step explanation:

8 0
4 years ago
How do I find the value of x
disa [49]
U could use a protractor to help u
all u gotta do is measure it then minus the entire thing from 15
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3 0
3 years ago
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In a high school, 7% of the students play the piano this is 21 students choose the expression that complete each step involved i
Inessa05 [86]

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8 0
3 years ago
Given: f(a)= a³ +a and g(a) = a -1 Find: (fog)(a)​
Anvisha [2.4K]

Answer:

(fog)(a)​ = a³ - 3a² + 4a - 2

           = (a - 1)×(a² - 2a + 2)

Step-by-step explanation:

<u><em>Given</em></u> :

g(a) = a -1 

f(a)= a³ +a

…………………………

(fog)(a)​ = f(g(a)​))

           = g(a)³ + g(a)

           = (a - 1)³ + (a - 1)

           = (a³ - 3a² + 3a - 1) + (a - 1)

           = a³ - 3a² + 3a - 1 + a - 1

           = a³ - 3a² + 3a + a - 1 - 1

           = a³ - 3a² + 4a - 2

<u><em>Second method</em></u> :

(fog)(a)​ = f(g(a)​))

           = f(a - 1)

           = (a - 1)³ + (a - 1)

           = (a - 1)×[(a - 1)² + 1]

           = (a - 1)×[a² - 2a + 1 + 1]

           = (a - 1)×(a² - 2a + 2)

4 0
2 years ago
The area of a triangular flower bed in the park has an area of
blagie [28]

Answer:

b = 24 ft

h = 10 ft

Step-by-step explanation:

120 = ½hb

120 = ½h(3h - 6)

240 = h(3h - 6)

240 = 3h² - 6h

 80 = h² - 2h

    0 = h² - 2h - 80

    0 = (h - 10)(h + 8)

    h = 10 ft or -8 ft

 we ignore -8 as it makes no sense for a triangle side length.

b = 3(10) - 6 = 24 ft

8 0
2 years ago
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