Answer:
w = 
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
w² + 7² = 14²
w² + 49 = 196 ( subtract 49 from both sides )
w² = 147 ( take the square root of both sides )
w = 
.6578 this would be the answer
Answer:
Step 2
Step-by-step explanation:
Mario made a mistake in Step 2 when substracting
from
. When substracting his result ended up being
but it is actually....

so the right answer is 
Answer:
The answer is 12
Step-by-step explanation:
12 + b is lees than or equal to 25
So 12 + 12 = 24
which is less than 25.
(The real answer is 13 but that is not the question lol)
So 12 makes the inequality true
If that makes sense