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lbvjy [14]
3 years ago
12

1: Triple the quantity of a number “n” plus 4 equals 27. what would the expression look like?

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
6 0

1: Triple the quantity of a number “n” plus 4 equals 27. what would the expression look like?

[ Triple the quantity of a number “n” ] 3n

[ plus 4 ] + 4

[ equals 27 ] = 27

[ all together ] <u>3n + 4 = 27</u>

<u />

<u>Solving:</u>

[ given ] 3n + 4 = 27

[ subtract 4 from both sides ] 3n = 23

[ divide both sides by 3 ] n = 7 \frac{2}{3}

 

2:Seventeen equals seven less than three times a number “n” what would the expression look like?

[ Seventeen equals ] 17 =

[ seven less than ] - 7

[ three times a number “n” ] 3n

[ all together ] <u>17 = 3n - 7</u>

<u />

<u>Solving:</u>

[ given ] 17 = 3n - 7

[ add 7 to both sides ] 24 = 3n

[ divide both sides by 3 ] 8 = n

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

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Answer:

The dimension of this rectangle = 2mm by 21mm

Where 2 mm = Width of the rectangle

21 mm = Length of the rectangle.

Step-by-step explanation:

The formula for the perimeter of a rectangle = 2(L + W)

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The perimeter = 46 mm

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W = x - 4

P = 2L + 2W

46mm = 2(3x + 3) + 2(x - 4)

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Collect like terms

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Since the Length = 3x + 3

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= 6 - 4

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Therefore, the dimension of this rectangle = 2mm by 21mm

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A study was conducted to investigate the relationship between the resale price, y (in hundreds of dollars), and the age, x (in y
GaryK [48]

Answer:

a. $121.07

b. $60.9

C. $20.03

Step-by-step explanation:

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Y=181.7-20.21x

Where y is in dollars and X is in years

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We have

y=181.7-20.21(3)

y=181.7-60.63

y=121.07

The resale price after 3years is $121.07

b. To find the resale price after 6years we have, we substitute x=6 into the given equation.

We have

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y=181.7-120.72

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The resale price after 3years is $60.98

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[(x=3)-(x=6)]/3

=(121.07-60.98)/3

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Hence the average annual decrease is $20.03

8 0
3 years ago
Read 2 more answers
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