Answer:
I believe the answer to the question is number one.
Step-by-step explanation:
The answers you are looking for are x = 6 and y = 4.
For these 2 equations, you would subtract the second one into the first one. This is so the y's cancel out temporarily, and so we can solve for x.
(10x + 3y = 72) - (9x + 3y = 66) = (x = 6).
Now, to find the y value, you take 6 and fill it in for x in one of the equations. I chose to use (10x + 3y = 72). The equation now says 10 * 6 + 3y = 72.
10 * 6 = 60. (60 + 3y = 72)
60 - 60 = 0 and 72 - 60 = 12. (3y = 12)
3y ÷ 3 = y and 12 ÷ 3 = 4 (y = 4)
Thus meaning your answers are x = 6 and y = 4. Here's a photo to show how i solved it as well.
I hope this helps!
Answer:
Poor Alex, I know how they feel, I got a dog myself.
The amount of time between
11:41 pm to 12:09 am is
19 minutes (to 12 am, 60 minutes to next hour) + 9
which is 28 minutes for the first dog barking session
the second time is 35 minutes,
using same method as before.
adding the two separte barking sessions we get
35+28= 63 minutes
which is equivelant to 1 hour and 3 minutes.
In conclusion the dog barks for 1 hour and 3 minutes in total.
Answer:
g+-7
Step-by-step explanation:
Let's simplify step-by-step.
3g−8−(2g−1)
Distribute the Negative Sign:
=3g−8+−1(2g−1)
=3g+−8+−1(2g)+(−1)(−1)
=3g+−8+−2g+1
Combine Like Terms:
=3g+−8+−2g+1
=(3g+−2g)+(−8+1)
=g+−7
Answer:
4 hr
Step-by-step explanation:
96 x 4= 384
80 x 4=320
384+320=704