Find x.
A: 2 square 5
B: 3 square 6
C: 6

Notice they are all right triangles. You will need Pythagorean theorem, which is a² + b² = c²

If you write down all the "equations" you can find, it is the following:

y² + 4² = x²

5² + y² = z²

x² + z² = 9²

Substitute them into one equation:

y² = x² - 4²

z² = 5² + (x² - 4²) Notice that the y² is replaced with what you found above

x² + (5² + x² - 4²) = 9² Notice that the z² is replaced with what's above

Now that it is just one line with one variable, you should be able to find value of x easily.

The answer is 6 if my calculations are correct.

1. 34

2. 268

3. x=14.4

step-by-step explanation:

connie < felicia < stew

step-by-step explanation:

stew:

we need to find the slope

m = (y2-y1)/ (x2-x1)

    = (2650-795)/(10-3)

    = 1855/7

265 words per minute

connie:

we need to find the slope

m = (y2-y1)/ (x2-x1)

we have two points (0,0) and (4,800)

m = (800-0)/(4-0)

  m = 800/4

    200 words per minute

felicia:

260 words per minute

200< 260 < 265

connie < felicia < stew