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# Algebra2 problems, HELP!?

Topic: Algebra2 problems, HELP!?
June 16, 2019 / By Beatie
Question: 1. 8x- (3x - 5) = 40 2. 0.9 (2X + 8) = 20 - (x + 5) 3. 1/6 (12t + 48) - 20 = -1/8 (24t - 144) 4. y(y - 4) (y + 2) = 0

## Best Answers: Algebra2 problems, HELP!?

Adelphie | 4 days ago
1.) 8x - (3x - 5) = 40 Eliminate parenthesis by multiplying each term in the parenthesis times -1 to get: 8x - 3x + 5 = 40, Combine like terms to get: 5x + 5 = 40, Subtract 5 from both sides to get: 5x = 35, Divide both sides by 5 to isolate (x) and get: x = 7 2.) 0.9 (2X + 8) = 20 - (x + 5), First we multiply each term times ten on both sides to eliminate any decimals to get: 9(2x + 8) = 200 - 10(x + 5), Eliminate parenthesis by using the distributive property to get: 18x + 72 = 200 - 10x - 50, Combine like terms to get: 18x + 72 = 150 - 10 x, Add 10x to both sides to get: 28x + 72 = 150, Subtract 72 from both sides to get: 28x = 78, Divide both sides by 28 to isolate (x) and get: x = 78 / 28, reduces to 39 / 14 3.) 1 / 6 (12t + 48) - 20 = -1 / 8 (24t - 144), Multiply each term on both sides times 48 (the common multiple of 6 and 8) to eliminate all fractions and get: 8(12t + 48) - 960 = -6(24t - 144), Eliminate parenthesis by using the distributive property to get: 96t + 384 - 960 = -144t + 864, Combine like terms on both sides to get: 96t - 576 = -144t + 864, Add 576 to both sides to get: 96t = -144t + 1440, Add 144t to both sides to get: 240t = 1440, Divide both sides by 240 to isolate (t) and get: t = 6 4.) y(y - 4) (y + 2) = 0 First we would set each multiplying term separately equal to zero to get: y = 0, y - 4 = 0, and y + 2 = 0, Now we solve each equation for (y) to get: y = 0, y = 4, y = -2
👍 216 | 👎 4
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Originally Answered: I left my green algebra2 book at school:( i need to know 5 questions for my homework from chapter 3?
I think we have the same book Solve the system using the substitution method. 4. x+3y=-2 -4x-5y=8 5. 3x+2y=10 2x-y=9 Solve the system using the linear combination method. 7. -3x+2y=-6 5x-2y=18 8. 5x-2y=12 -9x-8y=19 9. 4x-3y=0 -10x+7y=-2

Teige
1) 8x - 3x +5 = 40 ==> 5x = 35 ==> x =7 2) 1.8x + 7.2 = 20 - x - 5 ==> 1.8x + 7.2 = 15 - x ==> 2.8x = 7.8 ==> x = 2.7857 3) 2t + 8 - 20 = -3t +18 ==> 5t = 30 ==> t = 6 4) Three solutions ; set each equal to 0 a) y = 0 b) y - 4 = 0 ==> y = 4 c) y + 2 = 0 ==> y = -2 t = 6 y-4 = 0 ==> y = 4 y+2 = 0 ==> y = -2
👍 90 | 👎 -3

Phelim
(1) 8x - (3x - 5) = 40 8x - 3x + 5 = 40 5x = 40 - 5 5x = 35 x = 7 (2) 0.9 (2x + 8) = 20 - (x + 5) (9/10)(2x + 8) = 20 - (x + 5) 18/10 x + 72/10 = 20 - x - 5 18/10 x + 10/10 x = 15 - 72/10 28/10 x = 78/10 x = 78/28 x = 39/14 (3) 1/6 (12t + 48) - 20 = -1/8 (24t - 144) 2t + 8 - 20 = -3t + 18 5t = 30 t = 6 (4) y(y - 4) (y + 2) = 0 y = 0 y - 4 = 0 y = 4 y + 2 = 0 y = -2 y = 0, 4, -2
👍 87 | 👎 -10

Maachah
1. 8x-3x+5=40 5x+5=40 5x=35 x=7 2. 1.8x+7.2=20-x-5 2.8x=7.8 x=39/14 3. y(y^2-2y-8)=0 y=0 y^2-2y-8=0 y=4 y=-2
👍 84 | 👎 -17

Originally Answered: Why don't Democrats think problems through instead of automatically blaming problems on one of several groups that they hate?
Most Democrats, statistically, are Christian. And white men are one of the largest demographics of the Democratic party. So, I hardly think Democrats hate white men and Christians. And I see no difference between this and Republicans blaming "liberals" or teh gays for everything under the sun. Not that it's justified, but it's hardly exclusive to Democrats.

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