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Wittaler [7]
4 years ago
11

I need help with this alg2

Mathematics
1 answer:
mixas84 [53]4 years ago
4 0
I believe D but i am not sure but your chrome book is about to die !!
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Which expression is equivalent to 2(a + 2b) - a - 2b? A. 3a + 2b B. 3a - 2b C. a - 2b D. a + 2b
alex41 [277]

Answer:

a +2b

Step-by-step explanation:

2(a + 2b) - a - 2b

Distribute

2a +4b -a -2b

Combine like terms

2a -a + 4b-2b

a +2b

6 0
3 years ago
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3x - 7 + 15x + 16 = 9 - 2x + 4 - x
Nataly [62]

Answer:

Step-by-step explanation:

18x + 9 = -3x + 13

21x + 9 = 13

21x = 4

x = 4/21

5 0
3 years ago
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SOMEONE PLZ HELP?????
Art [367]
(43)3 multiplied by x=y
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4 years ago
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Una persona que está situada entre dos montañas emite un sonido, si percibe el primer eco a los 2 seg, y el siguiente a los 3 se
Goryan [66]

Answer:

1715 metros

Step-by-step explanation:

Lo que debemos hacer es calcular la distancia del primer y del segundo eco.

Debemos conocer la velocidad del sonido que en términos generales es 343 m/s, por lo tanto, la distancia sería igual a:

v = d/t => d = v*t

d1 = 343*2 = 686 metros

d2 = 343*3 = 1029 metros

La separación sería la suma de ambas distancias así:

686 + 1029 = 1715

1715 metros sería la distancia de separación entre ambas montañas.

3 0
3 years ago
Write a story problem that could be solved using this number sentence 12+28+ =53
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Answer:

just make one up

Step-by-step explanation:


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3 years ago
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