find four different solutions for the equation 5x+2y=3
Answers
Answer:
compulsory. In case of internal choices, attempt any one.
27. If a, ß and y are zeroes of the polynomial 6x2 + 3x2 - 5x + 1, then find the value of a-1 + B-1 + 1.
OR
Quadratic polynomial 2x2 – 3x + 1 has zeroes as a and B. Now form a quadratic polynomial whose
zeroes are 30 and 3B.
28. Find c if the system of equations cx + 3y + (3 - C) = 0; 12x + cy-c = 0 has infinitely many solutions ?
OR
Find the value(s) of k so that the pair of equations x + 2y = 5 and 3x + ky + 15 = 0 has a unique solution.
9. If the sum of first four terms of an AP is 40 and that of first 14 terms is 280. Find the sum of its first n terms.
D. If P and Q are the points on side CA and CB respectively of AABC, right angled at C. Prove that
(AQ? +BP2) = (ABP +PQ?)
. Prove that sino (1 + tano) + cosé (1 + coto) = seco + coseco
- Prove that the tangents drawn at the ends of a diameter of a circle are parallel.
Peter throws two different dice together and finds the product of the two numbers obtained. Rina
throws a die and squares the number obtained. Who has the better chance to get the numbers 25.
Answer:
5x+2x=3
7x=3
7-3=x
4=x
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