Kate
Step-by-step explanation:
hcl+Na2co3=2Nacl+h2o+co2
It’s name would be a monomial because it only has 1 term. (Terms are departed by addition or subtraction sign) The degree would be the highest exponent in the polynomial, in this case we only have 1 term so the degree of that term is 2
Answer:
a:d=7:9
Step-by-step explanation:
We have a system with 3 equation:

If we multiply all of these equations, then we have:

If we simplify this fraction dividing by 9, then:

Therefore, a:d=7:9