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.

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

a

b

d

step-by-step explanation: