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eduard
3 years ago
11

Solve the equation for all real solutions. 15r2 – 6r – 3 = -2r

Mathematics
1 answer:
Solnce55 [7]3 years ago
4 0

Answer:

Step-by-step explanation:

hello :

15r² – 6r – 3 = -2r

15r² – 6r – 3 +2r =0

15r²-4r -3 =0

delta =b² -4ac     a=15   b=-4   c=-3

delta =(-4)² - 4(15)(-3)=196 = 14²

r1 = (-b - √delta ) /2a = (4-14)/30 = -10/30 = -2/6 = -1/3

r2 = (-b + √delta ) /2a = (4+14)/30 = 18/30 = 3/5

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How many solutions does the following system of equations have?<br> y=5/2x+2<br> 2y= 5x +4
goldfiish [28.3K]

Answer:

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Step-by-step explanation:

y=5/2x+2

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3 years ago
74ft <br> 24ft <br> b<br> What is the length of the missing leg?
amm1812

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Step-by-step explanation:

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