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miss Akunina [59]
1 year ago
10

PLEASE ANSWER ASAP DUE BY THE END OF NIGHT!!! LOOK AT PICTURE FOR QUESTION

Mathematics
1 answer:
otez555 [7]1 year ago
3 0

Answer:

7x^2+11x-6

Step-by-step explanation:

4x^2+3x^2=7x^2

8x+3x=11x

3×-2 = -6

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Anna went from home to school with the speed 3 km/hour. She ran back home with the speed 6 km/hour.Her sister Olga went to schoo
PIT_PIT [208]
Let:
v = Olga's speed
t = the time Anna spent going to school (3 km/hour)
t/2 = the time Anna spent running back home with speed of 6 km/hour
So, t + t/2 = 3t/2 is the total time
In the meantime distance = speed*time and the both made the same distance we can put it as:
3t + 6*(t/2) = (3t/2)*v
6t = (3/2)tv divide both sides by t 
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Olga's speed was 4 km/hour.
3 0
3 years ago
2x+9=3(4x-7) help show work
ivann1987 [24]

Answer:

2x+9=12x-21

-2.      -2

9=10x -21

+21           +21

30=10x

Divide by 10 on both sides

30/10

x=3

Step-by-step explanation:

3 0
3 years ago
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