About 9/10 of the weight of a watermelon is water how many pounds of water are in the watermelon if it weighs 20 pounds?

18 pounds

Step-by-step explanation:

1) 9/ 10 = x/ 20

2) CROSS MULTIPLICATION: 10x/ 10= 180/10

3) Divide each side by ten and "x" is equal to 18

I hope this helped somewhat :)

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions