Mauro Cowee: 1 get rid of brackets12r-8r+20>12simplify to4r+20>12take the twenty onto the other side4r>-8divide by 4r>-22 remove brackets8m-4m-6=>0simplify4m-6=>0take the 6 to the other side4m=>6divide by 4m=>1.53 remove the brackets4-5y+10=simplify14-5y=take the y terms to the right hand side14=take the 18 to the LHS-4=hope that helps...Show more
Mauro Cowee: first you need to distribute the - to 8r and to 20 so 12r-8r+20>12. Then combine like terms (12r-8r) which is 4r+20>12. Then you need to get r by itself so -20 from both sides....so 4r>-8. Then divide both sides by 4 (get r alone) so r>-2.2.) distribute the -2. So 8m-4m-6>or eq.0. Then Combine like terms...so 4m-6>or eq.0. Then add 6 to each side (so add the 6 to the -6 to cancel then add 6 to the 0. So then 4m>or eq to 6. Then divide by 4 to get m alone. So m>or equal to 3/2.....hope this helps....math sucks....any ?'s email me at gabbin_gabos@yahoo.com...Show more
Jackelyn Archut: 1. This is ! the same as 12r + (-1)(8r-20) > 12. Distribute and simply.2. Again, distribute the -2.3. Ditto.Hope this helps....Show more
Refugio Gastineau: 1) 3y = 3 * y 2y = 2 * y -------------------- The LCD of 3y , 7y = 2 * 3 * y = 6y 4/3y = 8/6y 7/2y = 21/6y = = = = = = = = 2) 8x = 2 * 2 * 2 * x 12xy = 2 * 2 * 3 * x * y 6x = 2 * 3 * x -------------------------------- The LCD of 8x , 12xy , 6x is: 2 * 2 * 2 * 3 * x * y = 24xy (x + 1)/8x = (3xy + 3y)/24xy (3x - 1)/12xy = (6x - 2)/24xy 1/6x = 4y/24xy = = = = = = = = 3) x^2 - 4x - 5 = (x + 1) * (x - 5) x + 1 = x + 1 --------------------------------------... The LCD of x^2 - 4x - 5 , x + 1 is: (x + 1) * (x - 5) = x^2 - 4x - 5 6/(x^2 - 4x - 5) = 6/(x^2 - 4x - 5) 1/(x + 1) = (x - 5)/(x^2 - 4x - 5) = = = = = = = = 4) a - 5 = a - 5 a + 5 = a + 5 --------------------- The LCD of a - 5 , a + 5 is: (a - 5) * (a + 5) = a^2 - 25 a/(a - 5) = (a^2 + 5a)/(a^2 - 25) (a - 1)/(a + 5) = (a^2 - 6a + 5)/(a^2 - 25) = = = = = = = = 5) x^2 - 9 = (x + ! 3) * (x - 3) 2x + 6 = 2 * (x + 3) ----------------------------! ------- The LCD of x^2 - 9 , 2x + 6 is: 2 * (x + 3) * (x - 3) = 2(x^2 - 9) = 2x^2 - 18 2/(x^2 - 9) = 4/(2x^2 - 18) 1/(2x + 6) = (x - 3)/(2x^2 - 18)...Show more
Josefine Weekey: aight brown suga stop saying plzzz.... 1. 12r-(8r-20)>12 4r-20>12 4r>32 r>82. 8m-2(2m+3)=> 0 8m -4m-6=> 0 4m-6=> 0 4m=>6 m=>(6/4)3. 4-5(y-2)= 4-5y+10= -5y+14= -y= y=...Show more
Soraya Coodey: Combine Like termsIsolate the variableSolve for the variable
Rosann Mccomb: crap i totally clicked on your question figuring that i could help... then i saw that it was math.... i'm extremely sorry i suck at algebra......although if you have questions about anything else i am you person
Jed Porada: I don't get it either! *sob sob*Try searching for algebra help in google.. lots of sites there.I hate Mathematics... :(
Krystal Cordovano: you have to use the distributive property. like, on #1, you will have to distribute the negative into the paren! theses, making the equation 12r-8r+20>12. after that, you will want all of the variables on one side, and the numbers without variables on the other side of the inequality sign. so you will do the opposite of adding 20 in order to move it to the other side. you will subtract it from both sides. so the equation will be 4r>-8 (i am assuming you understood that i combined the like terms?) then you will divide by the 4 to get the r totally by itself. the answer is r>-2 i hope that you will be able to figure out the other problems with that explanation! good luck!ps. dont forget that when you divide by a negative, the inequality switches signs! and a heads up, but the person above me is wrong on #1. they missed a step. i dont mean to trash anybody, but i dont want you failing on your homework!...Show more
Marna Liddie: *Note 1: The main difference between "inequalities" and "equations"is that if you multiply both sides by a "negative" number,you have to flip the inequality! the other way. Otherwise, it is solved the same as a regular equation! .** Note 2: Also, when you distribute a "negative" number by multiplying to drop the parentheses, you need to change the sign of the terms inside. 1. a. Combine like terms "r" (*see Note 2)12r - 8r + 20 > 124r + 20 > 124r > -8b. Divide by 4 to get r by itselfr > -2 check your work plug in "-1" for r and see if it works(since "-1" > -2)12(-1) - (-8 - 20) > 12-12 + 28 > 1216 > 12 this is trueYou can also check if r "=" -2 makesthe "equation" true 12r - (8r - 20) "=" 122. a. distribute -2, and combine like terms "m"8m - 4m - 6 > = 0 [**see Note 2]4m - 6 > = 04m >= 6b. Divide both sides by 4m > = 6/4 or 3/2 = 1.5Check your workPretend m = 3/2 and also check if m = 2 which is > 1.53. Distribute to remove parentheses, Combine like terms4 - 5y + 10 14 - 5y Subtract 4y from both sidesand 18 from both sides:-4 or y >= -4Check your workTest if y = -4, and if y = -3 which is > -4...Show more
Delmy Varano: 12r-(8r-20)>12(12r) -8r+20>12-96rsquared 240r>12
Robin Tommie: For ! each, distribute the negative number over the parentheses.Ex. 5t-4(3t+2)>1 becomes 5t-12t-8>1Then collect like terms. Thus -7t>9Then divide by the remaining multiplier. Thus t sign flips when dividing by a negative number.
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