CPhill

All the x, y values on or "above" the line

Note that the equation shown, -1.2x + 2y = 1.6, can be transformed into yours

Multiply everything by 2.5

-3x + 5y = 4     Rearrange

5y = 3x + 4

But, since all the points we're interested in lie on or above the line, we have

5y ≥ 3x + 4   

So I guess we have 

(1375/6) / (1/4)   =

(1375/6) * (4/1)  =

1375 * (2/3)  = 2750/3 = 916 + 2/3

Leg₁² +  Leg₂² = Hypoteneuse² 

(6.5)² + (12)² = H²

42.25 + 144 = H²

186.25 = H²       Take the square root of both sides

H ≈ 13.65

We have 26 ways to choose each letter and 10 possibilities for each digit.

So we have, 26 x 26 x 10 x 10 x 10 x 10   =

26² x 10⁴  = 6,760,000

To convert a percent to a decimal, drop the percent sign and move the decimal two places to the left. "Of" means multiply.  So we have....

.023 x 50 = 1.15

We can also equate bases to solve this.

2^x = 8

2^x = 2³

So, x = 3.

Notice that each line has a different slope but both have the same y intercept. So their point of intersection = (0,1).

If the scale factor is 1:50, then everything represented by the drawing is 50 times as large in all respects.

So 50  x 7.2m = 360m.

Adding 3 hrs. to 3:45 gives us 6:45.

And 15 more minutes gives us 7:00.

So, we need to add 20 more minutes to this to get a whole 35.

And this gives us 7:20.