Find the value of
`(a) (-2)/5+3/8`
`(b) ((-9)/5)+((-4)/7)`

Find the value of : ( 5/8)^-7 times (8/5)^-4

"Find the value of "(4)/(9)-:((-5)/(7))

If (2a+b)/(a+4b)=3, then find the value of (a+b)/(a+2b)*(2)/(7)(b)(5)/(9)(c)(10)/(7)(d)(10)/(9)

Evaluate : Find the value of ( 7/4 - 8/5 )

Find the value of (-9)/(5)+(-8)/(5)-:(5)/(2)times(-5)/(4) a.)   -1 b. ) -3 c.) 2 d.)   -8

Find the value of (-9/5 +( -8/5 ) ÷ 5/2 times (-5/4 ) ) (a) -1 (b) -3 (c) 2 (d) -8

If 7x + 3y + 9 = 0 and y = kx + 7 are two parallel lines then find the value of k. (a)9/7 (b)-7/3 (c)5/8 (d)6/5

Find the value of | [5 , 9 ] ,[ 7 , -4 ] |

find the value of |(5,-3,7),(-2,4,-8),(9,3,-10)|

Let the five observations are 1,3,8,x,y and their mean is 5 and variance is 9.2 find the value of (x)/(y) (a) 9:4 (b) 6:7(c)5:8(d) none