When they ask for combining the variable terms, you take one of the variable terms and move to the other side of the equation and change its sign. From there, you cross multiply those variable terms and simplify. Once you simplify, you look at the denominator and that will be your answer.
Similarly for the constant terms, you take one of the constant terms and move to the other side of the equation and change its sign. Again, you cross multiply these two constant terms and simplify. The denominator you get after simplification will be your answer.
Answer:
= 90 - 3n
Step-by-step explanation:
There is a common difference between consecutive terms, that is
84 - 87 = 81 - 84 = - 3
This indicates the sequence is arithmetic with nth term
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 87 and d = - 3 , then
= 87 - 3(n - 1) = 87 - 3n + 3 = 90 - 3n
Answer:
Step-by-step explanation:
cubing on both sides we get
4z = (2z+3)(n-1)
4z = 2nz + 3n - 2z - 3
4z - 2nz + 2z = 3n - 3
z(6 - 2n) = 3n - 3
Answer:
(suprisingly easy) 6x3x4=72 in.
Step-by-step explanation: