Similarities: same atomic number
Differences: they have a different number of neutrons
Answer:
490
Step-by-step explanation:
546-56= 490
490+56= 546
I say the answer is B. Bland
The marked angles are opposite angles, and as such they have the same measure. So, we have
Subtract 2a and 11 from both sides to get
Divide both sides by 4 to get
Now that we know the value of a, we can compute the measure of the angles. We can also verify that the solution we found is correct by verifying that both expressions actually give the same result:
Answer: -2,3,&4
Step-by-step explanation:
Correct on edgenuity