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Montano1993 [528]
3 years ago
7

Help....................

Mathematics
1 answer:
monitta3 years ago
3 0
(-8,0), (-1,-1), (-4,-5)
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There are a total of 96 children in Years 4, 5 and 6
BaLLatris [955]

Answer: 20 children

Step-by-step explanation:

<u>Given</u>

Year 4: 11 cannot swim

Year 5: 21 can swim

Year 6: 18 of 30 can swim

Total 96 children

Total 37 cannot swim

<u>First Step: find the number of people from year 5 who cannot swim</u>

  • There are 30-18=12 people who cannot swim in year 6
  • There are 11 who cannot swim in year 4
  • Thus, we use the total number [37]-[year 4+year 6]=37-23=14 people who cannot swim in the year 5

<u>Second Step: find the number of children in year 5</u>

  • There are 21 children who can swim
  • There are 14 children who cannot swim
  • 21+14=35 children

<u>Third Step: find the number of children in year 4 who can swim</u>

  • There are 30 children in year 6
  • There are 35 children in year 5
  • There are 11 children in year 4 who cannot swim
  • There are in total 96 children
  • 96-30-35-11=20 children in year 4 who can swim

Hope this helps!! :)

Please let me know if you have any questions

7 0
3 years ago
Video games sold: x Revenue function: R(x) = 60x Cost function: C(x) = 12 + 7x Profit function: P(x) = What is the profit earned
nataly862011 [7]

Answer:

Profit P(x) = 53x-12 and On selling 20 video games profit will be 1048.

Step-by-step explanation:

In the given question functions are Revenue function : R(x) = 60x and Cost function : C(x) = 12+7x  for the sale of x video games

As we know profit = sale price - cost price

Therefore P(x) = R(x) - C(x)

Or P(x) = (R-C)x = 60x - (12+7x)

P(x) = 60x -12 - 7x

P(x) = 53x -12

Now the profit on selling 20 video games will be

P(20) = 53×20 -12 = 1060 -12 = 1048.

3 0
4 years ago
Read 2 more answers
Please help i need this done soon!!
frosja888 [35]

Answer:

f(2) = -2

Step-by-step explanation:

plug in 2 to wherever x is in this statement:

f(2) = -2(2^2) - 2(2) + 10

f(2) = -2(4) - 4 + 10

f(2) = -8 - 4 + 10

f(2) = -2

5 0
3 years ago
Read 2 more answers
a local business was looking to hire a landscaper to work on their property. they narrowed their choices to two companies. flour
ANTONII [103]
Flourish- 120x
Green Thumb- (70x)=1600

Flourish- 120*35= $4200
Green Thumb- (70*35)+1600= $4050

It would be less expensive to hire Green Thumb Landscapers. There is a $150 difference between the two

It would take 32 hours of work for the cost to be the same for both companies<span />
7 0
3 years ago
mark bought 4 pounds of bananas for $2.36 this week. last week he paid $1.83 for 3 pounds of bananas.which was the lower unit pr
Harlamova29_29 [7]

Answer:

this week's were lower unit price

Step-by-step explanation:

$2.36/ 4 pounds = $0.59/pound

$1.83/ 3 pounds = $0.61/pound

3 0
2 years ago
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