I won't answer them all for you (don't want to cheat - need to learn something).
But for the first one given:
<span>-2x-9y=-25
-4x-9y=-23
you set up either x or y (which ever one you want to eliminate) so that one of them cancels.
So this one is easy - you just have to multiply an entire row by negative (doesn't matter which one) - so that the y's will be + and -
Since they're both 9 and they're subracting NOW - you can eliminate the y value. Now add/subtract the x's. So it'd be -2 or 2 depending on how you eliminated y. Then add the number outside of the = sign. Now just solve for x. After that plug in whatever you got for x into both of the rows. Then find the y value.
Hopefully this wasn't confusing -- reply if it is and I will try to simplify. I can give you contact if you need help with the rest
Good luck!</span>
Answer:
D supplementary angles
Step-by-step explanation:
Answer: 6 and 5
Step-by-step explanation:
Explained already by another user
Answer:
rhtwjeukeyn3um3neh kedagjehkehjfq wy
Step-by-step explanation:
Cnameumag ga nhsntw ts at Arby's at ta ag fa at wy
If she used 3 for 36 we can assume the muffin tins hold 12 muffins, so we can do 60 divided by 12 to get 5!
She uses 5 muffin tins!
