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3 years ago

The total cost for 8 bracelets,including shipping was $54. the shipping charge was $6.

2 answers:

8 0

For 8 bracelets, total cost = Actual cost + shipping = $54
shipping = $6 (constant)
Actual cost = $54 - $6 = $48 (for 8 bracelet)
Cost of one bracelet = 48/8 = $6
Let y be total cost of bracelet, and x be total number of bracelet,
so, the equation of the cost of each bracelet would be
y = 6x + 6.

nevsk [136]3 years ago

4 0

Im pretty sure it would be 54÷ b- 6 if your looking for only the cost of the braclets nothing else.

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Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?

denis23 [38]

36 is must be added to the expression x² + 12x to make it

perfect-square trinomial

Step-by-step explanation:

The perfect-square trinomial x² + 2ax + a² = (x + a)², then

1. The first term in the trinomial is square the 1st term in the bracket

2. The middle term in the trinomial is the product of 1st , 2nd

terms of the bracket and 2

3. The 3rd term in the trinomial is square the 2nd term in the bracket

∵ The expression is x² + 12x

∵ We must add the 3rd term which make it perfect-square trinomial

- Divide 12x by 2 to find the product of the 1st term and 2nd term

in the bracket

∵ 12x ÷ 2 = 6x

∴ The 1st term is x and the 2nd term is 6 of the bracket

∵ The 3rd term in the trinomial is square the 2nd term in the bracket

∴ The 3rd term in the trinomial is 6² = 36

∴ x² + 12x + 36 = (x + 6)²

36 is must be added to the expression x² + 12x to make it

perfect-square trinomial

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2 years ago

You place the spring vertically with one end on the floor. You then drop a book of mass 1.50 kg onto it from a height of 0.900 m

Alex777 [14]

Answer:

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x = 0.143 m= 14.3 cm

Step-by-step explanation:

Given data

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Since the book is released from a height h = 0.9 m above the top of the spring. so the total distance

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By rearranging the above equation we get

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Put all the values in above equation we get

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By solving the above equation we get

x = 0.143 m= 14.3 cm

This is the value of the maximum distance the spring will be compressed.

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bagirrra123 [75]

Answer:

Step-by-step explanation:

24 + 26 + 28 = 78

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Eva8 [605]

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