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Delvig [45]
3 years ago
8

X^2-15x-108 Factoring need help

Mathematics
1 answer:
sveticcg [70]3 years ago
3 0

x=15-657/2=15-373/2=-5.316

x=15+657/2=15+373=20.316

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Bill and Sam go to a casino. They each have the same amour of money. After an hour bill had won $20 and Sam lost the same amount
Pachacha [2.7K]

Answer:

They each have $180 before they started.

Step-by-step explanation:

Let x represents the amount they each have before they started. Therefore, we have:

Amount with Bill after one hour = x + $20

Amount with Sam after one hour = x - $20

Amount with Bill after two hours = (x + $20) - (x + $20)(2 / 3)

Amount with Sam after two hours = (x - $20) + (x - $20)(2 / 3) = 4((x + $20) - (x + $20)(2 / 3)) ............... (1)

From equation (1), we can solve for x as follows:

(x - $20) + (x - $20)(2 / 3) = 4((x + $20) - (x + $20)(2 / 3))

(x - $20) + (x - $20)0.666666666666667= 4((x + $20) - (x + $20) 0.666666666666667)

x - $20 + 0.666666666666667x - $13.3333333333333= 4(x + $20 - 0.666666666666667x - $13.3333333333333)

x - $20 + 0.666666666666667x - $13.3333333333333= 4x + $80 - 2.66666666666667x - $ 53.3333333333332

Collecting the like terms, we have:

x + 0.666666666666667x - 4x + 2.66666666666667x = $80 - $53.3333333333332+ $20 + $13.3333333333333

(1 + 0.666666666666667- 4 + 2.66666666666667)x = $60

0.333333333333337x = $60

x = $60 / 0.333333333333337

x = $180

Therefore, they each have $180 before they started.

4 0
2 years ago
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
alekssr [168]
Someone else is answering the graph but the equation is y=-4x+2 -4 = slope 2 = y-intercept
4 0
3 years ago
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The monthly dues for a premium membership is $15 more than the cost of a standard membership. The premium membership cost $40 pe
77julia77 [94]
40.00 for premium - 15.00 more than standard
40-15=35.00 for standard
4 0
3 years ago
Simplify (3x2y)(5x3y−1)
ludmilkaskok [199]

Answer:

6xy(15xy−1)

Step-by-step explanation:

3 0
2 years ago
What is a simpler form of the following expressions?
nadezda [96]

Answer:

D. 49p² - 64

Step-by-step explanation:

(7p - 8)(7p + 8)

Solving this requires the 'difference of squares' concept which states;

If (a - b)(a + b)

Then the solution must be a² - b²

Considering (7p - 8)(7p + 8) then the answer is;

(7p)² - 8² = 49p² - 64

6 0
3 years ago
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