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sergiy2304 [10]
3 years ago
5

A music store marks up the instruments it sells by 30%.

Mathematics
1 answer:
Agata [3.3K]3 years ago
7 0
1. $58.50
2. $72.80
3.no because 75 x .3 =22.50 and 22.50 + 75= $97.50
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Please find the what x equals <br><br> 1) x/6=3/9<br> 2) 9/12=x/8<br> 3) 3/9=x/12<br> 4) x/12=6/8
pychu [463]

1)\\\dfrac{x}{6}=\dfrac{\not3^1}{\not9_3}\\\\\dfrac{x}{6}=\dfrac{1}{3}\qquad\text{multiply both sides by 6}\\\\x=\dfrac{1}{\not3_1}\cdot\not6^2\\\\\boxed{x=2}\\\\2)\\\dfrac{x}{8}=\dfrac{\not9^3}{12\!\!\!\!\!\diagup_4}\\\\\dfrac{x}{8}=\dfrac{3}{4}\qquad\text{multiply both sides by 8}\\\\x=\dfrac{3}{\not4_1}\cdot\not8^2}\\\\x=3\cdot2\\\\\boxed{x=6}

3)\\\dfrac{x}{12}=\dfrac{\not3^1}{\not9_3}\\\\\dfrac{x}{12}=\dfrac{1}{3}\qquad\text{multiply both sides by 12}\\\\x=\dfrac{1}{\not3_1}\cdot12\!\!\!\!\!\diagup_4\\\\\boxed{x=4}\\\\4)\\\dfrac{x}{12}=\dfrac{\not6^3}{\not8_4}\\\\\dfrac{x}{12}=\dfrac{3}{4}\qquad\text{multiply both sides by 12}\\\\x=\dfrac{3}{\not4_1}\cdot12\!\!\!\!\!\diagup_3\\\\x=3\cdot3\\\\\boxed{x=9}

8 0
3 years ago
What number is in the blank to complete the factorization of 3x + 24?
Lubov Fominskaja [6]

Answer:

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dunno if this helps or not i hope it does!

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
I dont really understand this stuff
viva [34]
The area of a parallelogram is the base times the height.

Area and base is given so we can use that to solve for the height:
72 = 6* h

h = 72/6
h = 12

The height is 12 units.


8 0
3 years ago
Jeff rents a truck. the truck rental place charges$38 per day plus $0.25 per mile to rent the truck. how many miles can Jeff tra
jolli1 [7]
Im pretty sure he can travel 800 miles not counting the truck rental fee. Im not 100% sure though.

Hope this helps!
3 0
3 years ago
Read 2 more answers
Please answer ASAP, I'm on the clock, please!
klio [65]
<span>Student 2: -9 + (6 + 9) - 42
-9 + (9 + 6) - 42
(-9 + 9) + 6 - 42
0 + 6 - 42
0 + 6 - 16
0 + 6 + (-16)
6 + (-16)
-10</span>


student 2 did

hope this helps

since it is only addition and subtraction, you can mix the orders up, as long as you use the correct sign
8 0
3 years ago
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