Find the solutions to the system of equations. x^2-y=4. 2x + y = -1

Step-by-step explanation:

x²-y=4

y=x²-4

2x+y=-1

2x+x²-4=-1

x²+2 x-3=0

x²+3 x-x-3=0

x(x+3)-(x+3)=0

(x+3)(x-1)=0

x=-3,1

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.