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Masteriza [31]
2 years ago
13

Juan bought 6 CDs that were each the same price. Including sales tax, he paid a total of $103.80. Of that total, $6.60 was

Mathematics
1 answer:
Travka [436]2 years ago
7 0

Answer: Each CD cost $16.20 before tax

Step-by-step explanation:

103.8 = 6.6 + 6c

c = CDs

103.8 -  6.6 = 97.2

97.2 = 6c

97.2/6 = 16.2

16.2 = c

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4th term of (4x-y)^9
Neko [114]
Now, let's do the same as we did for the previous one here.

\bf (4x-y)^9\implies 
\begin{array}{llll}
term&coefficient&value\\
-----&-----&-----\\
1&+1&(4x)^9(-y)^0\\
2&+9&(4x)^8(-y)^1\\
3&+36&(4x)^7(-y)^2\\
4&+84&(4x)^6(-y)^3
\end{array}

notice again, how did we get 84 for the 4th element's coefficient? well 36 * 7 / 3.  and so on.  And you can just expand it from there.
3 0
3 years ago
P(x)=5x^2-3x+7(x=1)<br> Pls
kramer

Answer:

9

Step-by-step explanation:

Given

p(x) = 5x² - 3x + 7 ← substitute x = 1

p(1) = 5(1)² - 3(1) + 7 = 5(1) - 3(1) + 7 = 5 - 3 + 7 = 9

4 0
3 years ago
A tip employee’s earnings most closely resemble those of which?
kotegsom [21]
A tip employee's earnings most closely resemble: a. an employee working on straight commission The amount that the employee get in a tip method will be highly depended on the performance and the satisfaction of services that the employees give to the customer. The better the performance, the more tip that employee will get from the customers
3 0
2 years ago
Read 2 more answers
Sara got fast food for lunch. She paid $1.12 on soup and $5.47 on a hotdog with a $20 bill. What was the change from the purchas
leonid [27]

Answer: 13.41$


Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
$14,038 is invested, part at 14% and the rest at 12%. If the interest earned from the amount invested at 14% exceeds the interes
Advocard [28]

Answer:

492.99

Step-by-step explanation: x = amount invested at 12%

y = amount invested at 9%

---

x + y = 20287

0.12x = 0.09y + 492.99

---

put the system of linear equations into standard form

---

x + y = 20287

0.12x - 0.09y = 492.99

5 0
2 years ago
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