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Andrews [41]
2 years ago
9

3ab + 4a 2a 3b 6b - 5ab --

Mathematics
1 answer:
natka813 [3]2 years ago
3 0

Is this a Question???????

(If this is important then sorry for my answer)

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A train traveling 50 mph left a station 30 minutes before a second train running at 55 mph. how soon did the second train overta
Finger [1]
<span>1st train DATA:
rate = 50 mph ; time = x hrs ; distance = rt = 50x miles

2nd train DATA:
rate = 55 mph ; time = (x-(1/2)) hrs ; distance = rt = 55(x-(1/2)) miles


Equation:
distance = distance 
50x = 55(x-(1/2)
50x = 55x - (55/2)
-5x = -55/2
x = 11/2
x = 5 1/2 hrs (time at which the 2nd train overtakes the 1st train)
Hope this helps!
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8 0
3 years ago
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What is the height of the wall that is 30 feet long and that required 2310 bricks to build
Diano4ka-milaya [45]
(2310)=7(30)H
2310=210H

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3 years ago
3. Which sequence has a common difference of three? *
Andrej [43]

Answer:

2, 6, 18, 54..

Step-by-step explanation:

2, 6, 18, 54...

2 x 3 = 6

6 x 3 = 18

18 x 3 = 54

54 x 3 = ...

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3 years ago
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Help asap give brain list
Ilia_Sergeevich [38]
Didn’t multiply 5 and 2
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Angle J and angle M are base angles of an isosceles trapezoid JKLM. If angle J=20x+9 and angle M =14x+15, find angle K
anzhelika [568]
K or l will be 151 degrees.

j and m are equal to each other, giving you x=1, substitute this in to get j and m equal 29 degrees.  k or L are opposite angles meaning they add up to 180 when added to j and m so j+l=180 or m+k=180
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3 years ago
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