What is the value of c?

units?

You may recognize that ∆WYZ is a 3-4-5 right triangle. Without any work, then
  c = 5


If you don't remember that a right triangle with legs 3 and 4 has a hypotenuse of 5, you can compute it using the Pythagorean theorem.
  c² = 3² + 4²
  c² = 9 + 16 = 25
  c = √25 = 5

c ≈ 5

using Pythagoras's theorem,

c² = a² + b²

c² = 4² + 3²

c² = 16 + 9

c = √25

c = 5

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25+26

Step-by-step explanation:

Number sense/reasoning:

Consecutive numbers means numbers that follow right after each other or in other words have a difference of 1. For example, 1 and 2 or 10 and 11

Now we now the definition of consecutive numbers.

We need to find two consecutive numbers that add or give the sum of 51.

We can exclude any number higher than 29 because any two numbers higher than 29 and are added together would go over the 51. For example, 30 + 31 = 61 (10 higher than what're we're looking for)

Since 20 + 20 = 40 and 5 + 6 = 11, we can conclude that the numbers 25 and 26 when added together give the sum of 51.