Mathematics OpenStudy (anonymous):

solve 0.6x+8<0x-5 OpenStudy (anonymous):

$0.6 x < -5 -8$ $0.6 x < \frac{-13}{0.6}$ $x < - 21.666666666666666666666666666667$ OpenStudy (anonymous):

Are you sure the coefficient for x in the right hand side is 0? OpenStudy (anonymous):

no I am not I know it is less then or equal to OpenStudy (anonymous):

I never did algebra and this is frustrating OpenStudy (anonymous):

Don't worry, its all about practice. You can just treat inequality signs just like an equality sign. Just remember that when you divide by a negative number, you must invert the equality sign, i.e: $-3x \leq 2$ $\frac{-3x \leq 2}{-3} \rightarrow x \geq \frac{-2}{3}$ OpenStudy (anonymous):

thanks did it make a difference about the 6.0 vs0.6? OpenStudy (anonymous):

Im sorry, i don't follow. Could you rephrase the question? OpenStudy (anonymous):

oh you ask if the the 6 was on the right side of the problem it was written 0.6 OpenStudy (anonymous):

got time for another one? OpenStudy (anonymous):

i asked abot the right hand side, not the left side. On the left you have 0.6 x +8 and on the right you have 0x -5. And that 0 confuses me, why did you even write it? And yes, show me the other one OpenStudy (anonymous):

soybean meal is 12% protein Cornmeal 6% protein. How many lbs of each should be mixed together in order to get 240 lbs mix that is 10% proteing Corn mealLBS? Soybean lbs? OpenStudy (anonymous):

Ok, I'm going to take a little time in order to write a full explanation. OpenStudy (anonymous):

Fitst write equations to reflect what you know, let x be the amount of soybean in pounds and y be the amount of cornmeal in pounds. Then the total amount of mixture is (let's call this equation 1): $x + y = 240$ And the total protein percentage is (let's call this equation 2): $12x + 6y = 10(x+y)$ Substitute equation 1 in equation 2 and divide the whole thing by 6 to make things easier $\frac{12x + 6y = 10(240)} {6}$ $\frac{12x}{6} + \frac{6y}{6} = \frac{2400} {6}$ $2x + y = 400$ Solve this for y: $y = 400 - 2x$ Now substitute this in equation 1: $(400 - 2x) + x = 240$ $400 - x = 240$ $x = 400 - 240$ $x = 160$ Substitute the value back in equation 1: $(160) + y = 240$ $y = 240 -160$ $y = 80$ If you plug these values in equation 2 the equality must hold to check our results: $12(160) + 6(80) = 10(160 + 80)$ $2400 = 2400$ OpenStudy (anonymous):

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