Just a quick question: what is 1 + 1

answer: two

step-by-step explanation: i + i = ii

answer:

2

step-by-step explanation:

(let the variable k represent the equation 1 + 1.)

that means the following equation is also true:

k - 1 = (1 + 1) - 1

this can then be simplified:

k - 1 = 1

(assuming both (k - 1) and k itself are both greater than 0)

next, square both sides:

(k - 1)² = 1²

then subtract 1 from each side:

k² - 2k + 1 - 1 = 1 - 1

factor this equation:

k × (k - 2) = 0

this equation implies that the variable k equals either 0 or 2. however, as clarified before, k is a number greater than 0, meaning k = 2

k = 2 and k = 1 + 1, meaning that 1 + 1 is mathematically equivalent to 2.

answer: 180

step-by-step explanation:

12-2=10

20-2=18

18x10=180

e.

step-by-step explanation:

because there are always 10 numbers in a phone number.