Fill
`(a) -4,square,square,square,square,6`
`(b) square,38,square,square,square,-22`

In the following APs, find the missing terms in the boxes : (i) 2,square,26 (ii) square,13,square,3 (iii) 5,square,square,(1)/(2) (iv) -4,square,square,square,square,6 (v) square,38,square,square,square,-22

Complete the following: 2x+y=8 x: 0, square , 3 y: square , 4, 2 (x,y): square , square , (3,2) x-y=1 x: square , 2, square y: -1, square , 4 (x,y): square , square , square

Complete the following activities. Write the correct number in the given boxes from the following A.P. 1,8, 15, 22,….. Here a = square, t_(1)=square,t_(2)=square, t_(3)=square ,…… t_(2)-t_(1) = square- square =square t_(3)-t_(2) = square -square = square therefore d=square

In the following A.P. 's find the missing terms in the boxes : square, 38, square,square,square,-22

(8)/(square)= (3.2)/(square)

The regression equation of x on y is 40x-18y = 214… (i) The regression equation of y on x is 8x -10y +66 =0….. (ii) Solving equations i and ii, barx=square bary=square :. b_(yx) = (square)/(square) :. b_(xy) = (square)/(square) :. r = square

Write the correct number in the given boxes from the following A.P. -3,-8, -13, -18 ,….. Here, t_(1) = square, t_(2) = square, t_(3)=square, t_(4)=square, t_(2)-t_(1) =square, t_(3)-t_(2)=square therefore a =square, d=square

Write the correct number in the given boxes from the following A.P. 3,6,9,12,……. Here t_(1)=square, t_(2)=square, t_(3)=square, t_(4)=square, t_(2)-t_(1) = square, t_(3)-t_(2) = square therefore d=square

Mean of x= 25 Mean of y =20 sigma_x = 4 sigma_y=3 r = 0.5 b_(yx) = square b_(xy)= square When x = 10 y-square=square(10 - square) :. y = square

Write the values of the follwing trigonometric ratios (i) sin 30^@ = (1)/(square) (ii) cos 30^@ = square /square (iii) tan 30^@ = square / square (iv) sin 60^@ = square / square (v) cos 45^@ = square / square (vi) tan 45^@ = square