1 year ago

Please Help I'll give brainiest!! (answer quick please!!!!)

Mathematics

1 answer:

Xelga [282]1 year ago

4 0

Answer:

im pretty sure that the first one is C, but the other one i don't know

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If the sum of the roots of the equation 3x² + kx + 1 = 0 is 7. then what the value of k

koban [17]

Answer:

The value of k is -21

Step-by-step explanation:

ax² + bx + c = 0

Sum of the roots = -b/a

3x² + kx + 1 = 0

= sum of the roots = -k/3

-k/3 = 7

Now, Multiply both side by (-3) we get,

(-3)-k/3 = 7(-3)

k = -21

Thus, The value of k is -21

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