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kap26 [50]
3 years ago
6

3. The total cost for 9 bracelets, including shipping was $72. The shipping charge was $9. Define your variable and write an equ

ation that models the cost of each bracelet.
4. Use the equation you have written above determine the cost for each bracelet. Show the algebraic steps that it takes to find the answer. Provide your conclusion.
Mathematics
1 answer:
ikadub [295]3 years ago
8 0

Answer:

The equation that models the cost of each bracelet is 72=9x+9. Cost of each bracelet is $7.

Step-by-step explanation:

Let the cost of each bracelet is defined by the variable x.

Cost of 9 bracelet is 9x. The shipping cost is $9. Therefore the total cost of 9 bracelets, including shipping is

\text{Total Cost}=9x+9

The total cost for 9 bracelets, including shipping is $72.

72=9x+9

Subtract 9 from both sides

72-9=9x+9-9

63=9x

Divide both sides by 9.

7=x

Therefore the cost of each bracelet without shipping changes is $7.

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Answer:

x=4

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

Step 2: Add 25x to both sides.

Step 3: Subtract 16 from both sides.

Step 4: Divide both sides by 9.

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3 years ago
Mario needs at least $650 to pay for his new phone. He has $100 and is saving $30 from each of his weekly paychecks. Write and s
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Hope that helps.
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10y⁵ + 30y³ - 15y =

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3 years ago
The probability that a college student uses Twitter for social networking is 0.92 if 9 students are chosen at random use the bin
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Answer:

0.8417

Step-by-step explanation:

The probability that a college student uses Twitter for social networking is p=0.92, then the probability that a college student does not use Twitter for social networking is q=1-p=1-0.92=0.08.

9 students are chosen at random.

Use the binomial probability formula to find the probability that 8 use Twitter:

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Use the binomial probability formula to find the probability that 9 use Twitter:

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