Alan and Pedro eat today at the same Taqueria, but Alan attends every 20 days and Pedro every 38 when will they meet again?

380 days

Step-by-step explanation:

38 × 1 = 3838 × 6 = 228    

38 × 2 = 7638 × 7 = 266

38 × 3 = 11438 × 8 = 304

38 × 4 = 15238 × 9 = 342

38 × 5 = 19038 × 10 = 380

20 × 1 = 2020 × 6 = 120

20 × 2 = 4020 × 7 = 140

20 × 3 = 6020 × 8 = 160

20 × 4 = 8020 × 9 = 180

20 × 5 = 10020 × 10 = 200

20 x 10 = 200  20 x 20 = 400

so 20 x 19 = 380

First common number in both times table is 380

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

it’s the first one your welcome