depasw

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+18

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depaswSep 27, 2013

+18

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depaswSep 27, 2013

+18

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gonna start with the second equation first so y = (5-10x)/15
subbing that into the first equation 15x - (4/3)(5-10x)=-7
15x - 20/3 + (40/3)x = -7 making 15x into 45/3 x and -7 into -21/3 then adding them together
(85/3)x = 1/3 multiply everything by 3
85x = 1 so x = 1/85 and plug that into either equation to solve for y
15(1/85)-20y = -7 made 15/85 into 3/17
20y = -7 - 3/17 multiplying by 17 to the whole problem
340y = -119-3
340y = -122
y = -61/170

enjoy

depaswSep 27, 2013

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-r^19s^4 its not as tough as it really looks since its all addition of powers really

depaswSep 27, 2013

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depaswSep 27, 2013

+18

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depaswSep 27, 2013

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assuming that both legs are equal then the 44.5 length hypotenus squared would give you 1980.25
if they are in fact the same length then dividing that number by 2 will give you the square of each leg so 1980.25/2 = 990.125
and taking the square root of that will give you 31.466 for the length of each leg assuming they are both the same length or each of the other 2 angles are 45 degrees

depaswSep 27, 2013

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the reference angle should be 0* which would be the positive leg of the x-axis on a Cartesian plane

depaswSep 27, 2013

+18

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(2m+3)(3m^2-4m-1)
6m^3-8m^2-2m+9m^2-12m-3
6m^3+m^2-14m-3

depaswSep 27, 2013