Answer:
b = -1
Step-by-step explanation:
First plug in 4 for each x:
Then simplify by multiplying out what you can with 4:
After simplify further by combining like terms:
Then isolate b on one side by subtracting 4 from each side:
Finally isolate b further by dividing each side by 4 to get b alone and find the answer:
Answer:
I should be able to do this because im in 6th grade...
Step-by-step explanation:
Answer:
Step-by-step explanation:
Use the Pythagoran Theorem
28x+20y =14*4 = 56
28x + 21y = 9*7 =56
=> y=0, x = 2