Which equation best represents this situation?
forty-three minus an unknown number equals 86.
a.
n • 43 = 86
b.
43n = 86
c.
43 + n = 86
d.
43 – n = 86

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

Nine more than four times a number is the same as one less than twice the number. find the number?

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?