By definition of supplementary angles, m∠1 + m∠2 = (a) and m∠2 + m∠3 = (b). Then, m∠1 + m∠2 = m∠2 + m∠3 by the (c). Subtract m∠2 from each side. You get m∠1 = (d), or ∠1 ≅ (e).

step-by-step explanation:

f

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

486in is correct

step-by-step explanation: