9 and 7 find the length of the third side

Yay! We’re both doing Delta Math!!

x = √130

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Trigonometry

[Right Triangles Only] Pythagorean Theorem: a² + b² = c²

a is a leg b is another leg c is the hypotenuse

Step-by-step explanation:

Step 1: Define

Leg a = 9

Leg b = 7

Hypotenuse c = x

Step 2: Solve for x

Substitute in variables [Pythagorean Theorem]:                                           9² + 7² = x²[Hypotenuse] Rearrange:                                                                                x² = 9² + 7²[Hypotenuse] Evaluate exponents:                                                                x² = 81 + 49[Hypotenuse] Add:                                                                                          x² = 130[Hypotenuse] [Equality Property] Square root both sides:                          x = √130

Not sure what the question is?

You can find the area of a rectangle by multiplying the length and height. so multiply 1/2*7/4(which is the simpler version of 1 3/4) and you get 7/8 as your answer.