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kirill [66]
3 years ago
5

B is the midpoint of 2004-01-01-04-00_files/i0420000.jpg. Find the length of 2004-01-01-04-00_files/i0420001.jpg

Mathematics
2 answers:
damaskus [11]3 years ago
8 0
You need to equate the two expressions to get the value of x. That is 3x - 5 = x + 3 and solve for x, you will get x = 4. Then get the length of line ZB and line BA by substituting the value of x you've got; hence line ZB = 3(4) - 5 = 7 and line BA = 4 + 3 = 7. Add the two lines to form a single line ZA, that is 7 + 7 = 14. So the answer is D.14
Svetlanka [38]3 years ago
5 0

Answer:

answer is D(14)

Step-by-step explanation:

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Answer:

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3 years ago
Un padre para estimular a su hijo para estudiar matemáticas le dice: por cada ejercicio que resuelvas bien te daré 7 € y por cad
Naya [18.7K]

Answer:

8 ejercicios

Step-by-step explanation:

De acuerdo a la información dada, puedes plantear las siguientes ecuaciones:

x+y= 45 (1)

7x-1y= 19 (2)

x= ejercicios que resolvió bien

y= ejercicios que resolvió mal

Primero, puedes despejar x en (1):

x= 45-y (3)

Segundo, debes reemplazar (3) en (2):

7(45-y)-1y=19

315-7y-1y= 19

315-8y= 19

315-19= 8y

296= 8y

y= 296/8

y= 37

Tercero, debes reemplazar el valor de y en (3) para encontrar x:

x= 45-37

x= 8

De acuerdo a esto, la respuesta es que el hijo ha resuelto bien 8 ejercicios.

8 0
3 years ago
He difference of two numbers is 50. twice one number equals three times the other. find the numbers.
Juli2301 [7.4K]
X-y=50 and 2x=3y 
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2y+100=3y
y=100

x-100=50
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150-100=50 and 150 is 3*50 and 100 is 2*50 so fits all requirements!

hope this helps you! thank you!
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Answer:

Step-by-step explanation:

So remember we must start with the negative side.

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3 years ago
Simplify expression: <br><br> 3(4x-5) + 4(2x+6)
SVEN [57.7K]
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Distribute.

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24-15= 9

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I hope this helps!
~kaikers
6 0
3 years ago
Read 2 more answers
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