Answer:
B) -7
Step-by-step explanation:
x+y
8+(-15)=8-15=-7
This is a system of linear equations. First, you can add the two equations together to eliminate the y so that you can solve for x:
-5x + -7x = 0 + -96
-12x = -96
x = 8
Use x to solve for y:
-5 * 8 + 8y = 0
Add 40 to both sides and divide by 8:
y = 5
So, x = 8 and y = 5.
Okay so the first one is right.
The second one is wrong.
the third one is right.
The forth one is wrong.
Note: This is a perfect application for equations of ratios.
50 40
------- = ------- and so 50x = 1200, or 5x = 120, or x = 24 (miles).
30 x
Answer:
For the first question, the answer is 4/3. For the second it is 16.
Step-by-step explanation:
I just took the quiz! Can I please have Brainliest? Hope this helped!
