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SSSSS [86.1K]
3 years ago
6

If A plus B equals 2X -2 and A -B equals 4X -8, find A and B

Mathematics
1 answer:
zvonat [6]3 years ago
4 0
A+B = 2X -2
A-B = 4X -8

Add the equations, 
2A = 6X - 10
A = 3X - 5

Now, 3X - 5 + B = 2X - 2
B = 2X-3X - 2 + 5
B = 3 - X

Hope this helps!
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Step-by-step explanation:

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An airplane needs to reach a velocity of 203.0 km/h to take off. On a 2000 m runway, what is the minimum acceleration necessary
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Answer:

1.59 m/s²

Step-by-step explanation:

Acceleration = change in Velocity over time. Mathematically it is represented as Δv/Δt

Given values in the question:

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<em>To use the equation for acceleration time is needed.</em>

<em>velocity= distance/time</em>

(203/3.6) = 2000/time  <em>mltiplying both sides by time</em>

(203/3.6) x time = 2000 <em>making time subject of the formula</em>

time = 2000/(203/3.6)

time = 35.47 seconds

Substituting into the acceleration equation

acceleration =Δv/Δt

                      =(56.39- 0)/35.47

                       = 56.39/35.47

                       =1.59 m/s²

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Geometry help I NEED ASAP ( see picture).
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8π is the circumference

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What is the value of x in this diagram?<br><br><br> Please help
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2 years ago
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