Answer:
x=12
Step-by-step explanation:
3(x-1)=2x+9
3x-3=2x+9
3x-2x-3=9
x-3=9
x=9+3
x=12
Correct 33.246 to 2 significant figures:
the answer is 33 :)
Answer: 349.5 miles
<u>Step-by-step explanation:</u>
Use the formula distance (d) = rate (r) x time (t):
Since there are two different rates and times so solve each one separately and then add them together.
A+B: the matrix with same dimension a A and B, the element in row i and column j is: Aij+Bij
Same for A-B, but with Aij-Bij
8n=90-n
first get the n to one side...
8n^2=90
then divide
n^2=11.25
(i feel like theres one more step but im unsure)
