Remember
a^3-b^3=(a-b)(a^2+ab+b^2)
(11x)³-(2y)³=(11x-2y)(121x²+22xy-4y²)
Answer:
49
Step-by-step explanation:
Since x equals 4 you have to do 6×4 which is 24 then add 25 and it gives you 49
Answer:
x∈ (9,∞)
Step-by-step explanation:
-16 (x-5)<-64
-(16x - 16 · 5) < -64
-(16x - 80) < -64
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<u><em>x∈ (9,0)</em></u>
Answer:
Use trig
Step-by-step explanation:
sin(55) = x/21
x = 21sin(55)
use calculator in degree mode
cos(55) = y/21
21cos(55) = y
Answer:
40
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
8 ÷ 2(3 + 7)
<u>Step 2: Evaluate</u>
- (Parenthesis) Add: 8 ÷ 2(10)
- Divide: 4(10)
- Multiply: 40