Question

plz answer fast its important right answers will be marked as brainilist ​

Answer 1

Answer:

explanation will help you

Step-by-step explanation:

sum of roots = -b/a = 4/5 = alpha + beta

product of roots = c/a = -3/5 = alpha * beta

hope it helps you

please mark this as brainliest

Answer 2

ANSWER ⤵️

$a = 7 \\ d = a2 - a1 \\ d = 11 - 7 \\ \\ d = 4 \\ \\ n = 20 \\ \\ sn = \frac{n}{2} (2a + (n - 1)d) \\ \\ s20 = \frac{20}{2} (2 \times 7 + (20 - 1)4) \\ \\ s20 = 10(14 + (19)4 \\ \\ s20 = 10(14 + 76) \\ \\ s20 = 10(90) \\ \\ s20 = 900$

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