Which is greater? -20 or 15

15

Step-by-step explanation:

-20 is to the left on the number line which signifies that it is of low numerical value.

15 on the other hand is to the right on the number line which signifies that it holds still low but greater numerical value.

Hope this helps you and have a great day!

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,