Find the missing side of each triangle. Leave your answers in simplest radical form.

4√11 km.

Step-by-step explanation:

By the Pythagoras theorem:

x = √(15^2 - 7^2)

= √176

= √16√11

= 4√11.

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a