Answer:
-3 is a solution.
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>
Step-by-step explanation:
<u>Step 1: Define</u>
3 - 4r ≥ 15
<u>Step 2: Solve for </u><em><u>r</u></em>
- [Subtraction Property of Equality] Subtract 3 on both sides: -4r ≥ 12
- [Division Property of Equality] Divide -4 on both sides: r ≤ -3
<u>Step 3: Compare</u>
- Substitute in <em>r</em>: -3 ≤ -3
This is true. -3 is less than <em>or equal to</em> -3.
Answer:
1/8
Step-by-step explanation:
first multiply 2 x 2 and you get 4
then multiply 2x2x2x2x2 and you get 32
simplify 4/32
4 divided by 4 = 1
32 divided by 4 = 8
1/8
I hope this is clear!
Answer:
Step-by-step explanation:
let r be the radius of the cylinder and h the height:
The surface are as a function of the radius and the first derivative is calculated as;
Hence, the least surface area is achieved when the height and radius of the cylinder is equal,