Question

Please Please help me with my math Thanks :)

Answer 1

Answer:

About 3.1 feet

Step-by-step explanation:

To find the missing lengths of a triangle, we must use pythagorean theorem. I'll put each part in steps so you can easily follow.

Step 1: Set Up the Equation

$a^{2} + b^{2} = c^{2}$

Note: c is the longest side of the triangle, the hypotenuse and a and b are the other two sides.

Step 2: Fill in Given Values

$1.4^{2} + b^{2} = 2.1^{2}$

Step 3: Multiply

$1.96 + b^{2} = 4.41$

Step 4: Subtract

$1.96 + b^{2} = 4.41\\b^{2} = 2.45$

Step 5: Unsquare b

$b = \sqrt{2.45} \\b = 1.56524758424...$

b = about 1.6

Step 6: Find the Chord

$x = 2y = 2 * 1.57 = 3.14$

about 3.1 feet

Step 7: Check

1.96 + 2.45 = 4.41

4.41 = 4.41 ✔

Step 8: Answer

x = about 3.1 feet

I'm always happy to help :)

Answer 2

Answer:

Step-by-step explanation:

Pythagorean theorem ,

y² = 2.1² - 1.4²

= 4.41 - 1.96

= 2.45

y =√2.45

y = 1.57 ft

x = 2y = 2 * 1.57 = 3.14

= 3.1 feet