Answer:
Step-by-step explanation:
d=2q, q=d/2
10d+25q=630, using q=d/2
10d+25d/2=630
20d+25d=1260
45d=1260
d=28
So he has 28 dimes.
Answer:
Hello,
Step-by-step explanation:
Let's assume A,B,C the 3 explorers and X,Y,Z the 3 guides.
Only A and X can operate the boat.

I hope you will understand the travels
Answer:
Well, if <em>y </em>is 1
Then the equation would be y = 1 (2x)
So, depending on the answer options. Y would be double of whatever the X value is.
See how 1 X value is worth 2 Y?
Example Attached
Answer:
it demonstartes a algebraic property
Step-by-step explanation:
3x#
=8=9=
=67