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STatiana [176]
3 years ago
15

Find x (Will mark brainliest if you are right)

Mathematics
1 answer:
Marizza181 [45]3 years ago
4 0

Answer:

Step-by-step explanation:

(-3x + 2)(45x + 21) + (-4x + 25) = 50

-135x^2 - 63x + 90x + 42 - 4x + 25 = 50

-135x^2 + 23x + 67 = 50

-135x^2 + 23x + 67 - 50 = 0

-135x^2 + 23x + 17 = 0

quadratic formula : x = (-b ± √b^2 - 4ac)/2a

a = -135, b = 23, c = 17

x = -23 ± √23^2 - 4(-135)(17) / (2(-135)

x = (-23 ±√9709 )/ -270

x = 23/270 ± 1 / 270√9709/270

x = 0.4501 or x = - 0.2798 <=== these answers are rounded

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3 years ago
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3 years ago
1. What is the hypothesis for this conditional statement? If a number is even then it is divisible by 2.
liubo4ka [24]

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6 0
3 years ago
Please help meeeeeeeeeeee!!!!!!!!!!!!!!!
pochemuha

Answer:

6. b

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8. a

9. c

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8 0
3 years ago
How much longer, to the nearest minute, would it take to travel 290 miles at 60mph versus 70 mph.
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Hope this helped!
*psst it would help if you gave me brainliest answer, I'm close to ranking up :) Thanks!
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