A certain drug is made from only two ingredients: compound A and compound B. There are 3 milliliters of compound A used for every 5 milliliters of compound B. If a chemist wants to make 576 milliliters of the drug, how many milliliters of compound A are needed?

216 millilitres

Step-by-step explanation:

From the question, you are given that there are 3 milliliters of compound A used for every 5 milliliters of compound B. That means compound A and B are in ratio 3 to 5. That is,

A : B = 3 : 5

If a chemist wants to make 576 milliliters of the drug, then find the ratio of compound A.

To do that, first add the ratio of both together, 3 + 5 = 8

For compound A,

3/8 × 576

1728/8 = 216 millilitres

Therefore, 216 millilitres of compound A are needed.

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3