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MrRa [10]
3 years ago
5

What is the solution to the equation n + 12 = 17?

Mathematics
1 answer:
yarga [219]3 years ago
6 0

Answer:

n=5

Step-by-step explanation:

12+5=17 is equal to 12+n=17 so n=5

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You are making several purchases from the I.B. Electric electronics store. You can buy from this retailer online or in a physica
svetoff [14.1K]
<span>Buy the batteries and stereo online: 

4.99*2= $9.98 +$90 = $99.98 
6.99-5.00 = $1.99 
99.98+1.99=$101.97 

3Cds in store 
7.97*3= $23.85 
5% tax = 1.19 
10% off = 2.39 
$23.85 - $1.19= $22.66 

22.66 + 101.97= $124.63 

All in store: 
12+100+23.85= 135.85 - 6.45 = $129.40 

All online: 
9.98 + 90 + 26.85= 126.85 +$1.99 = 128.84</span><span>
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4 0
3 years ago
Read 2 more answers
The very busy Freshman class is selling tickets for an upcoming field hockey game. The class sells 20 more student tickets than
mixer [17]

Answer:

60 student tickets and 40 adult tickets were sold

Step-by-step explanation:

Let s represent student tickets and a adult tickets, then the system of equations can be written as

s - a = 20 →(1)

2s + 4a = 280 → (2)

Multiply (1) by 4 and add to (2) to eliminate a

4s - 4a = 80 → (3)

Add (2) and (3) term by term

6s = 360 ( divide both sides by 6 )

s = 60

Substitute s = 60 into (1)

60 - a = 20 ( subtract 60 from both sides )

- a = - 40 ( multiply both sides by - 1 )

a = 40

Thus

60 student and 40 adult tickets were sold.

7 0
3 years ago
2. Use the conversion table to convert the following metric units into the given English units.
ruslelena [56]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
The sum of two numbers is 10. One number is 4 times the other. Find the number
Lesechka [4]
How easy! Just list all the factors that add up to ten.

10 + 0

9 + 1

8 + 2

7 + 3

6 + 4

5 + 5

Which ones match the requirements?
8 0
3 years ago
Read 2 more answers
The sum of the digits of a two-digit number is 12. The number formed by interchanging the digits is 54 more than the original nu
-BARSIC- [3]
Let X and Y be the digits.
If a two-digit number is written XY, then its value is 10x+y.
When the digits of the number are interchanged, it's YX, and its value is 10y+x.

The sum of the digits is 12.
The number formed by interchaning the digits is 54 more than the original number.

x+y=12 \\&#10;10x+y+54=10y+x \\ \\&#10;x+y=12 \\&#10;10x-x+y-10y=-54 \\ \\&#10;x+y=12 \\&#10;9x-9y=-54 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\div 9 \\ \\&#10;x+y=12 \\&#10;\underline{x-y=-6} \\&#10;x+x=12-6 \\&#10;2x=6 \\&#10;x=\frac{6}{2} \\&#10;x=3 \\ \\&#10;x+y=12 \\&#10;3+y=12 \\&#10;y=12-3 \\&#10;y=9

The digits X and Y are 3 and 9, so the original number is 39.
8 0
3 years ago
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