202 is 400, 302 is 900. 1300 +d2 = 0. 900 = -d2. d = -(sqrt1300) = -36.055
-26
205
20 + 12 + 32 + 20 + 30 + 72 = 186
30 + 3-2 = 10/9
30 or -10 if the 20 is negative.
-20
50 + 40 + 40 + 40 + 30 + 30 + 20 + 10 = 260
5x + 20 = 4x +30 5x - 4x = 30 - 20 x = 10
18 + 10 + 20 + 30 + 15 + 50= 143
The word plus has only one s.Seconds does not require an apostrophe.The answer is 4 minutes.
a = 20
10 + 20 = 30