Question

Pls answer fast within one hour

Answer 1

7 )

a. -5 and -6 is the pair whose sum is -11

b. -25 + 14 ÷ (5-3) = -25 + 14 ÷ 2 = -25 + 7 = -18

8).

let x and y are two Integers

so, ATQ. x*y = -36 and x - y = 15 => x = 15 + y

put the value of x in x*y = -36

(15 + y)*y = -36

15y + y² = -36

y² + 15y + 36 = 0

y² + 12y + 3y + 36 = 0

y(y + 12) + 3(y + 12) = 0

(y+3)(y+12)= 0

y = -3 or -12

x = 12 or 3

9)

x*y= -216

x*(-6)=-216

x = -216/-6

x = 36

10)

profit = 47

loss = 12 +8=20

profit > loss

net profit = 47 - 20 = 27