Gomez found the masses of three rocks for a science project. the first rock had a mass of 19.28 grams the second rock had a mass of 25.3 grams and the third rock had a mass of 46.3 grams. how much greater was the mass of the third rock than the combiend mass of the other two rocks.

1.72 grams.

Step-by-step explanation:

We have been given that Gomez found the masses of three rocks for a science project. The first rock had a mass of 19.28 grams the second rock had a mass of 25.3 grams and the third rock had a mass of 46.3 grams.

First of all, we will add the masses of 1st and 2nd rock to find the combined mass of both rocks.

Now we will subtract the combined mass of both rocks from the mass of 3rd rock.

Therefore, the mass of the 3rd rock is 1.72 grams greater than the combined mass of the other two rocks.

12/11c

or

12

c

11

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10