X+9 ? I'm not sure if that was the kind of answer you were looking for but that's what I got out of that.
Answer:
-r
Step-by-step explanation:
A₁ = -5x-8; a₂ = -x-14; a₇=?
d = a₂ - a₁
= x-14 - (-5x-8)
= -x - 14 + 5x + 8
= 4x-6
a(n) = a₁ + (n-1)d
a₇ = -5x-8 + (7-1)(4x-6)
= -5x-8 + 6(4x-6)
= -5x - 8 + 24x - 36
= 19x - 44
Answer:
one ten was traded for ten ones
Step-by-step explanation:
372 cannot be divided by 3 easily. However, 360 +12 can be divided by 3 easily, so it makes sense to trade one of the seven tens for ten ones. That will leave 6 tens, but give twelve ones.
370 +2 = 360 +12 . . . . where the "+" numbers are the numbers of ones
