I think it’s the first one. 30:54 because 5 times 6 is 30 and 9 times 6 is 54.
Answer:
Jada walked 
Elena walked 
Lin walked 
Step-by-step explanation:
Let
x----> total miles walked by Jada
y----> total miles walked by Elena
z----> total miles walked by Lin
we know that
-----> equation A
-----> 
------> equation B
------> equation C
Substitute equation C and equation B in equation A and solve for x
Find the value of y
Find the value of z
therefore
Jada walked
Elena walked
Lin walked
Answer:
Mark makes more money than Stan.
Step-by-step explanation:
There are about 52 weeks in a year. If you multiply $685 by 52, it will be $36,305.
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:
(X+5)(x^2-5x+25)
Step-by-step explanation:
