Answer:
16
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality<u>
</u>
<u>Trigonometry</u>
[Right Triangles Only] Pythagorean Theorem: a² + b² = c²
- a is a leg
- b is another leg
- c is the hypotenuse<u>
</u>
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify variables</em>
Leg <em>a</em> = <em>a</em>
Leg <em>b</em> = 12
Hypotenuse <em>c</em> = 20
<u>Step 2: Solve for </u><em><u>a</u></em>
- Substitute in variables [Pythagorean Theorem]: a² + 12² = 20²
- Evaluate exponents: a² + 144 = 400
- [Subtraction Property of Equality] Isolate <em>a</em> term: a² = 256
- [Equality Property] Square root both sides: a = 16
Simplify
2/4z + 1 = 2/4z + 1
Answer: D. Infinite solutions
The answer is 225
15•15=225
Answer:
<h3><em>the </em><em>answer</em><em> </em><em>is </em><em>A</em></h3>
Step-by-step explanation:
8x+6is equivalent to-7(1-x)+x+13 because
-7(1-x)+x+13
we use-7to multiply the numbers in the bracket which is equal to -7+7x(minus ❌times minus =+)
-7+7x+x+13
collect like terms
7x+x+13-7=8x+6
answer is A
Triangle, sum of all 3 angles = 180
so 180 - (99 + 11) = 180 - 110 = 70
answer: the third angle = 70
