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# How do u solve these math problems?

Topic: How do u solve these math problems?
July 19, 2019 / By Tottie
Question: 1) 3-3x ------------ 3x^2+6x-9 2) x^2+9x+14 -------------- x X (times) 9 ---- 3x+21 3) 3x+8 ------- x^2-16 + 4 ---- x^2-16 9x^0 y-8 ---------------- 2--8 please show steps on how solved :] thanku! so much u dont know how much id appreciate it and also im picking a best answer for sure on here so yeaa also the reason its not lined up is because it kept squishing the numbers together so yea

## Best Answers: How do u solve these math problems?

Sabella | 9 days ago
You can't solve these unless they're equal to 0. But you can simplify them. Hint: Use parentheses ( ), square brackets [ ], * for multiplication in your notation 1) (3-3x) / (3x^2+6x-9) Factor out the numerator and denominator if possible. (3-3x) / (3x^2+6x-9) 3(1-x) / 3(x^2 + 2x - 3) 3(1-x) / 3(x+3)(x-1) 2) (x^2+9x+14) / x * 9 / (3x+21) Factor out if you can. (x+7)(x+2) / x * 9 / 3(x+7) The x+7 in the numerator and the denominator cancel each other out, leaving you with: (x+2) / x * 9 / 3 (x+2) / x * 3 3(x+2)/x 3) (3x+8) / (x^2-16) + 4 / (x^2-16) Since the denominators are the same, you can add the numerators together. (3x +8 + 4) / (x^2-16) (3x + 12) / (x^2-16) Factor out if possible. 3(x+4) / (x+4)(x-4) The x + 4 cancel each other out, leaving: 3 / (x-4) 4) UPDATED: If the equation should say (9x^0y^8) / 2^8, you can simplify it. (9x^0y^8) / 2^8 Since anything to the power of 0 is 1, this means: (9*1*y^8) / 2^8 This simplifies to 9y^8 / 2^8
👍 186 | 👎 9
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Originally Answered: I cannot solve these math problems? Help me? (Intermediate Algebra/math 99)?
1 . 3 a - 8 b = 9 ---> 24 a - 64 b = 72...{ x 8 }....... .... 8 a - 9 b = 5----> 24 a - 27 b = 15...{ x 3 }...subtract : - 37 b = 57 , now find a #2. multiply the 1st by 3 , subtract from the 2nd , solve for y , then x....leave as a fraction #3. replace y in the 1st with { y = } 6x + 5...solve for x , than y

Nerissa
LMAO i have no idea, but you're awesome and I wish yahoo answers existed when i was in school!! But yeah, after they tried shoving this stuff in my brain is about the time my math skills (if I had any to begin with....) went down hill. Good luck to ya tho! :)
👍 70 | 👎 5

Lucile
The question asks you in looking "if six hundred represents 100 what does 174 represent?" six hundred ->100 174 -> ? which translates to an mathematical equation ? = (100*174)/six hundred ? = 29 So the answer is 29 % of six hundred is 174. In different words an same sentence transaltes to "174 is 29 % of six hundred"
👍 62 | 👎 1

Kaycee
1) 3-3x ------------ 3x^2+6x-9 3-3x ____ 3(x^2+2x-3) -3(x-) ____ 3(x+3)(x-1) Cross out like terms -3 ___= 3(x+3) -1 ____ x+3 I think thats right???
👍 54 | 👎 -3

Originally Answered: How do you solve these math problems?
A. E(X) = np = 10,000(3/20) + 5,000(9/20) + 0(1/4) + (-5,000)(3/20) = 3,000 = expected profit B. probability of getting a 2 or 12 = 2/36 = 1/18 probability of getting a 7 = 6/36 = 1/6 probability of getting neither 2,12 or 7 = 1 - (1/18 + 1/6) = 7/9 E(X) = 20(1/18) + 5(1/6) + (-3)(7/9) = -7/18

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