Answer: D
Step-by-step explanation:A scientist who studies the objects in the sky, including planets, galaxies, black holes, and stars, is called an astronomer
ANSWER

EXPLANATION
The given expression is

To find an expression for d in terms of a, b, and c, means we want to make d the subject of the relation.
This means that, we need to isolate d on one side of the equation while all other terms are on the other side.
We subtract from both sides of the equation to obtain,

We now divide through by -1, to get,

Or

The topic is change of subject
Answer:
9 yd
Step-by-step explanation:
15 yd - 6 yd = 9 yd
Please mark my answer as brainiest
247x82=534 5 go in the hundreads place 3 go in the tens place and 4 go in the ones place