Question

. The value of b if x=1 y=1 is a solution of 9bx+11by=20 is (a) 20 (b)-20 (c)-1 (d) 1​

Answer 1

QUESTION:

The value of b if x=1 y=1 is a solution of 9bx+11by=20 is (a) 20 (b)-20 (c)-1 (d) 1

OPTION D

SOLUTION:

IF X= 1 , Y = 1

B = ?

$\\ \\ \\ 9bx + 11by = 20(given) \\ \\ \\ \\ 9b(1) + 11b(1) = 20 \\ \\ \\ \\ 9b + 11b = 20 \\ \\ \\ \\ 20b = 20 \\ \\ \\ \\ \\ b = 1 \: \: (answer)$

Answer 2

Answer:

AREAThe base and height of a triangle are in the ratio 4:3. If the base is increased by 4 cm and the height is decreased by 2 cm, the area of the triangle remains the same. Find the base and the heightThe base and height of a triangle are in the ratio 4:3. If the base is increased by 4 cm and the height is decreased by 2 cm, the area of the triangle remains the same. Find the base and the height