Not that I'm a chemistry expert but mathematically,The total weight of the bar is directly proportional to the known weight of the bar and the given percentage. I worked it out and found that the the total weight of the bar is 30 ounces. This is how I did it

Step-by-step explanation:

80:24

100:n

80(n)=100×24

A little equation and after it's solve the variable (n) will be equal to 30

The unit is added after calculations so that's how the answer is 30 ounces

8 0

3 years ago

At a birthday party there were 20 balloons. A few of the kids decided to pop b balloons so the parents blew up another 6 balloon

notsponge [240]

The expression could be: (20-b)+6

5 0

3 years ago

2x+3y=6, what is the rate of change

ankoles [38]

Answer:

-2/3

Step-by-step explanation:

rate of change is slope

so rearrange the equation to get in y = mx + b format

2x + 3y = 6

move the 2x over by subtraction

3y = -2x + 6

now divide by 3 to get y by itself

y = -2/3x + 2

6 0

3 years ago