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luda_lava [24]
3 years ago
5

Help with problems 1 & 3

Mathematics
1 answer:
vlabodo [156]3 years ago
5 0
One side of the rectangle is x=2, the other side is 2x-5
Add up all the four sides: (x+2) +(x+2)+(2x-5)+(2x-5)=54
6x-6=54
x=10

#3: suppose the first integer is x, then the second one is x+2
x(x+2)=255
x^2 +2x -255 =0
factor the quadratic equation: (x+17)(x-15)=0 
x=-17, which is impossible, or x=15
so the two positive integers are 15 and 17


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3 years ago
a 1 kg ball has 10 joules of kinetic energy and starts to roll up a hill how far up the hill will it be when it stops
AURORKA [14]

Answer:

<em>The ball will roll upto </em><em>1 m.</em>

Step-by-step explanation:

A 1 kg ball has 10 joules of kinetic energy and starts to roll up a hill.

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According to the law of conservation of energy, the kinetic energy plus the potential energy equals a constant.

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\Rightarrow 10=1\times 10\times h

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3 years ago
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emmasim [6.3K]
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2 years ago
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