hi105
22.08.2019 •
Mathematics
Abag contained 3/4 pound of marbles. each marble weighed 1/36 pound. after ashley removed some marbles from the bag, it weighed 1/3 pound. how many
marbles did ashley remove?
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Ответ:
15
Step-by-step explanation:
3/4 (the amount in the bag to start) divided by 1/36 (weight of a single marble) = 3/4 / 1/36 = 3/4 * 36/1 = 108/4 = 27 marbles in the bag to start with
1/3 (weight left in the bag) divided by 1/36 (weight of a single marble) =
1/3 / 1/36 = 1/3 * 36/1 = 36/3 = 12 marbles left in the bag
27 (marbles to start) - 12 (marbles left) = 15 marbles removed
I know this question is old, but I searched for the answer before I eventually figured it out. Hope it can help someone.
Ответ:
C.
Step-by-step explanation:
We have been an image of a cylinder. We are asked to choose the equation that can be used to find volume of the given cylinder.
We will use volume of cylinder formula to solve our given problem.
, where,
V = Volume of cylinder,
r = Radius,
h = Height of cylinder.
Upon looking at our given image, we can see that and diameter of cylinder is 6 cm.
We know that diameter is 2 times radius, so radius of cylinder would be .
Upon substituting our given values in volume formula, we will get:
Therefore, option C is the correct choice.