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3 years ago

What is the answer to this?

Mathematics

1 answer:

Alex73 [517]3 years ago

4 0

2 is the answer jeuuehehe

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What is the difference between a^3+b^3 and (a+b)^3?

mylen [45]

There is no different in both of them. if you used both of them in a math problem you would still get the same answer as if you use the other one.

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4 years ago

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Choose the correct simplification of the expression −3x2(5x − 4x2 − 6).

Bess [88]

Answer B.
$- 3 {x}^{2} (5x - 4 {x}^{2} - 6) \\ = - 15 {x}^{3} + 12 {x}^{4} + 18 {x}^{2} \\ = 12 {x}^{4} - 15 {x}^{3} + 18 {x}^{2}$

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4 years ago

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MaRussiya [10]

Answer:

i forgot but i did this earler

Step-by-step explanation:

5 0

3 years ago

Use the quadratic formula to solve for x. 4x2 +9x-1=0

insens350 [35]

Answer:

$x=\frac{-9\pm\sqrt{65} }{8}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Standard Form: ax² + bx + c = 0
Quadratic Formula: $x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

Step-by-step explanation:

Step 1: Define

4x² + 9x - 1 = 0

Step 2: Define variables

a = 4

b = 9

c = -1

Step 3: Find roots

Substitute: $x=\frac{-9\pm\sqrt{9^2-4(4)(-1)} }{2(4)}$
Exponents: $x=\frac{-9\pm\sqrt{81-4(4)(-1)} }{2(4)}$
Multiply: $x=\frac{-9\pm\sqrt{81-16} }{8}$
Subtract: $x=\frac{-9\pm\sqrt{65} }{8}$

5 0

3 years ago

A company has the pay scales below , with the percent of employees receiving that pay listed. Find the best value to represent a

LenKa [72]

The given table is the following:

Job Salary % of Employees
-------- ------------ ----------------------
Entry $30,000 60%
Expert $40,000 38%
CEO $125,000 2%

Let n = total number of employees.

Entry:
Number = 0.6n
Pay total = 0.6n*(30,000) = $18,000n

Expert:
Number = 0.38n
Pay total = 0.38n*(40,000) = $15,200n

CEO:
Number = 0.02n
Pay total = 0.02n*(125,000) = $2,500n

Total pay = 18,000n + 15,200n + 2,500n = $35,700n
Average salary = 35,700/n = $35,700

Answer: $35,700

7 0

4 years ago