Answer:
85
Step-by-step explanation:
Write the numbers in order
66, 72, 74, 80, 83, 87, 91, 95, 98, 99
Find the middle number
83 and 87 are in the middle, so find the mean of them. 83+87= 170
170/2 = 85.
Answer:
x = -1, 19
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
- Subtract Property of Equality
<u>Algebra I</u>
- Standard Form: ax² + bx + c = 0
- Factoring
- Multiple Roots
- Completing the Square: -b/(2a)
Step-by-step explanation:
<u>Step 1: Define</u>
2x² - 20x = x² - 19
<u>Step 2: Solve for </u><em><u>x</u></em>
- [Subtraction Property of Equality] Subtract x² on both sides: x² - 20x = -19
- Complete the Square [Addition Property of Equality]: x² - 20x + 100 = -19 + 100
- [Complete the Square] Simplify: (x - 10)² = 81
- [Equality Property] Square root both sides: x - 10 = ±9
- [Addition Property of Equality] Add 10 on both sides: x = 10 ± 9
- Evaluate: x = -1, 19
Answer:
Step-by-step explanation:
hi, it means that we have to compute
im pretty sure its (6,0). 5.
If one of the number is x then the other one is 95-x
their product, p, is x times 95-x
p=(x)(95-x)=95x-x²
p(x)=95x-x²
