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kirza4 [7]
3 years ago
10

Please help me with this homework …

Mathematics
1 answer:
jeka943 years ago
5 0

Answer:

I think letter B

Step-by-step explanation:

Yyyyyyyygggggggggggggggg

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3x+y=15 <br><br><br> 5x-4y=8<br><br> resolucion de sistema por el metodo de sustitucion
Brrunno [24]

Answer:

x=4

y=3

Step-by-step explanation:

we have the following equations

3x+y=15  equation 1

5x-4y=8  equation 2

using equation 1 we have:

y=15-3x equation 3

using equation 3 in equation 2 we have:

5x-4(15-3x)=8

5x-4*15+4*3x =8

5x-60+12x = 8

17x=68

x=68/17

so we have x=4

finally in equation 3:

y = 15-3(4)

y = 15-12

y = 3

8 0
2 years ago
1/4 + 7/8 = ?<br> 2/3<br> 5/8<br> 1 1/8<br> 13/4
Marta_Voda [28]

Answer:

c

Step-by-step explanation:

1/4 + 7/8 =

2/8 + 7/8    Convert the 1/4 to the denominator as 8 so we can add the top number.

9/8      Add the top number.

1 1/8     Simplifly the result.

4 0
2 years ago
Read 2 more answers
PLEASE HELP!! I NEED THIS SOON!! Explain why you cannot use algebra tiles to model the multiplication of a linear polynomial by
iris [78.8K]

Answer:

Step-by-step explanation:

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6 0
3 years ago
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What is the rule for 1,3,5,7?
Anestetic [448]
You need to keep adding 2 to each number
7 0
3 years ago
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Translate: 6 less than twice a number
Basile [38]

Answer:

2x-6

Step-by-step explanation:

twice a number is

2\times x\\\\=2x

6 less than twice a number is

6 less than 2x and that is

2x-6

6 0
3 years ago
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