Kira needs 3,000 milligrams of zinc for a science experiment.
Which expression can be used to determine how many grams of zinc she needs?
To convert milligrams to grams, we divide by 1000. Therefore, the expression that can be used to determine how many grams of zinc Kira needs is:
3,000 mg ÷ 1000 = 3 grams of zinc.
the answer is c
To determine how many grams of zinc Kira needs, you can use the expression:
(3000 milligrams) / (1000)
This expression divides the given quantity in milligrams by 1000 to convert it to grams.
To determine how many grams of zinc Kira needs, we can use the conversion factor between milligrams (mg) and grams (g).
The conversion factor is 1 gram = 1000 milligrams, which means that one gram is equivalent to 1000 milligrams.
To find the number of grams, we can set up a proportion:
(3000 mg) / (1 g) = (x mg) / (y g)
where x represents the unknown quantity of zinc in milligrams and y represents the unknown quantity of zinc in grams.
Since we want to find the number of grams, we can rearrange the equation to solve for y:
y = (x mg) / (3000 mg) ----- (1)
Now, we already know that x is 3000 mg, so we can substitute this value into equation (1):
y = (3000 mg) / (3000 mg)
Canceling out the units of milligrams on both sides of the equation, we get:
y = 1 g
Therefore, Kira needs 1 gram of zinc for her science experiment.
The expression that can be used to determine how many grams of zinc Kira needs is:
(3000 mg) / (3000 mg) = 1 g