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Mashcka [7]
4 years ago
13

An instrument Store has 20% clearance on every instrument. A guitar originally costs $120. You take it to the cashier and they c

harge a sales tax of 5%. How much did you pay for the guitar?
Mathematics
1 answer:
pychu [463]4 years ago
5 0

Answer:

I’m pretty sure the answer would be $100.80

Step-by-step explanation:

1. Take the $120 and multiply by 0.20, which will give you 24 (that’s 20% of 120)

2. Subtract $120-$24= $96

3. There is a 5% sales tax so take 96 and multiply by 0.05 and you get 4.8

3. Add $96+$4.80= $100.80

There might be a shorter way to calculate percentages and all but this is what works for me, I hope it helps!

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Is the last number together??
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4 years ago
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Please help me with this geometry question
mixer [17]

Answer:

180+18\sqrt{3}\ in^2.

Step-by-step explanation:

The surface area of right triangular prism is the sum of area of two base triangles and 3 area of side rectangles.

The area of base triangle is

A_{base}=\dfrac{a^2\sqrt{3}}{4},

where a is the length of the side of equilateral triangle. In your case, a=6 inches. Thus,

A_{base}=\dfrac{6^2\cdot\sqrt{3}}{4}=9\sqrt{3}\ in^2.

The area of side rectangle is

A_{side}=ah,

where h is the height of the rectangle. In your case, h=10 inches. Thus,

A_{side}=6\cdot 10=60\ in^2.

Hence, the surface area is

SA=2\cdot 9\sqrt{3}+3\cdot 60=180+18\sqrt{3}\ in^2.

6 0
3 years ago
Ifj. 1. what is the value of i
melomori [17]

Answer:

<em>i</em>

Step-by-step explanation:

The square root of a negative number is identified as an imaginary number (<em>i </em>)

An imaginary number (i) with exponent 3 or any other exponent remains an imaginary number.

The answer is:

<em>i</em>

3 0
3 years ago
Solve this problem on paper using all four steps.
ratelena [41]
Your mistake is that week 3 is twice of week 2
week2=x+5, twice of that is 2(x+5)=2x+10, you did not distribute the 2 to the 5 and you got 2x+5, that is your mistake


x is first week
2nd week is y
3rd is z

5 more the 2nd week than 1st week
x+5=y

3rd week is double 2nd wee
z=2y

total is 431

x+y+z=431
sub
y=5+x and z=2y
x+5+x+2y=431
sub 5+x for y
x+5+x+2(5+x)=431
x+5+x+10+2x=431
4x+15=431
minus 15
4x=416
divide by 4
x=104
add 4
x+5=109
double
2*109=218

they sold
1st week: 104
2nd week: 109
3rd week: 218
3 0
3 years ago
Read 2 more answers
Which expression is equivalent to 3(x+5)+2x? Help me soon I’m so confused
Contact [7]

3(x+5)+2x

First, distribute 3 to all terms within the parenthesis

3(x) = 3x

3(5) = 15

3x + 15 + 2x

Combine like terms

(3x + 2x) + 15

5x + 15

(B) is your answer

hope this helps

7 0
3 years ago
Read 2 more answers
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