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devlian [24]
3 years ago
5

E= n^2 + n +5 if n =3

Mathematics
2 answers:
alekssr [168]3 years ago
5 0

Answer:

17

Step-by-step explanation:

Given

n² + n + 5 ← substitute n = 3 into the expression

= 3² + 3 + 5

= 9 + 3 + 5

= 17

zmey [24]3 years ago
3 0

Answer:

Step-by-step explanation:

Putting value of n = 3 in equation

(3)2 + 3 + 5

9 + 8

= 17

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You purchase 26 parking hours that you can use the next month to park your food truck at the fair. Weekday hours park $2 per hou
ICE Princess25 [194]

Answer:

Number of week day hours purchased  is 5

Step-by-step explanation:

Total number of Parking hours purchased = 26 parking hours

Parking cost on weekdays = $2 per hour

Parking costs on weekends = $10 per hour

Total amount spent on parking =  $220.

To Find:

Number of week days purchased = ?

Solution:

Let  

The number of week days purchased be x

The number of weekends purchased be  y

We know that the total hours purchased is 26

So,

x+y = 26

y = 26-x------------------------------------------------------(1)

Now the total cost is 220

(Total number of weekdays X cost per weekday ) +(Total number of weekends + cost per weekend) =220

Substituting the values

=>x\times 2 + y \times 10 = 220

=>x \times 2 + (26-x) \times 10 =220

=>2x + 260 -10x =220

=>260 -8x = 220

=>260 -220 =8x

=>40 = 8x

=>x=\frac{40}{8}

x= 5-------------------------------------------(2)

Now substituting (2) in (1) we get

y= 26-5

y= 21

7 0
4 years ago
The Porter family budget in the new city is shown in the graph. Of the seven expenses shown, which of the following is fixed?
barxatty [35]

Answer:

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Step-by-step explanation:

5 0
3 years ago
1
bogdanovich [222]

Answer:

12$ an hour

Step-by-step explanation:

60 minutes in an hour 15 times 4= 60 which is one hour, so 4 times 3 equals 12 which is the answer

4 0
3 years ago
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natta225 [31]
Answer:


The answer is C, -6/5
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What is the equation of the line passing through the points (-25,50) and (25,50 in slope intercept form?
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Answer:

y=50

Step-by-step explanation:

Since the y value doesn't change and it is a line

y=50

5 0
4 years ago
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