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3 years ago

What's x - y (x = 5, y = -5)

Mathematics

2 answers:

sweet-ann [11.9K]3 years ago

7 0

Answer:

Step-by-step explanation:

x - y = 5 - -5

= 5 + 5

= 10

drek231 [11]3 years ago

5 0

Answer: 10

Step-by-step explanation:

5-(-5) is addition. 5+5=10

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Solve for x 6x^2=2x-1

leva [86]

Answer:

$\displaystyle x=\frac{1\pm i\sqrt{5}}{6}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Algebra I

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

Algebra II

Imaginary Roots: √-1 = i

Step-by-step explanation:

Step 1: Define

6x² = 2x - 1

Step 2: Rewrite

Subtract 2x on both sides: 6x² - 2x = -1
Add 1 to both sides: 6x² - 2x + 1 = 0

Step 3: Identify Variables

a = 6

b = -2

c = 1

Step 4: Solve for x

Substitute [QF]: $\displaystyle x=\frac{2\pm\sqrt{(-2)^2-4(6)(1)} }{2(6)}$
Exponents: $\displaystyle x=\frac{2\pm\sqrt{4-4(6)(1)} }{2(6)}$
Multiplication: $\displaystyle x=\frac{2\pm\sqrt{4-24} }{12}$
(Square Root) Subtract: $\displaystyle x=\frac{2\pm\sqrt{-20} }{12}$
Factor: $\displaystyle x=\frac{2\pm \sqrt{-1} \sqrt{20} }{12}$
Simplify: $\displaystyle x=\frac{2\pm 2i\sqrt{5} }{12}$
Factor GCF: $\displaystyle x=\frac{2(1\pm i\sqrt{5} )}{12}$
Simplify: $\displaystyle x=\frac{1\pm i\sqrt{5}}{6}$

3 0

3 years ago

Can you help me solve this question?

kolezko [41]

Answer:

A. 9(x + 8) = 9(x + 12)

Step-by-step explanation:

Simplify the probelm;

9(x + 8) = 9(x + 12)

Distribute;

9x + 72 = 9x + 108

Inverse opreations;

9x + 72 = 9x + 108

-9x -9x

72 = 108

This statement is not true, hence the equation has no solutions;

7 0

3 years ago

Read 2 more answers

The GCF of 12 and 28 is _____.

Alenkasestr [34]

greatest common factor 12 and 28 is 4

5 0

3 years ago

Read 2 more answers

6. Dele charged $30 for shovelling snow for 2 1/2 hours. At that rate how much can Dale expect to eam

nata0808 [166]

Answer:

The charge for shovelling snow for 6 hour is 72 hours

Step-by-step explanation:

Given as :

The charge for shovelling snow for 2 $\frac{1}{2}$ hours is $30

Let The charge for shovelling snow for 6 hours = $ x

Now, Applying unitary method

∵ The charge for shovelling snow for 2 $\frac{1}{2}$ hours = $30

or, The charge for shovelling snow for $\frac{5}{2}$ hour = $30

So, The charge for shovelling snow for 1 hour = $\frac{30×2}{5}$ hour

∴ The charge for shovelling snow for 6 hour = $\frac{30×2}{5}$ × 6 hours

I.e The charge for shovelling snow for 6 hour = $\frac{360}{5}$ hours

= 72 hours

Hence The charge for shovelling snow for 6 hour is 72 hours Answer

5 0

3 years ago

Factor the trinomial completely 4s^2+21s+5

Zanzabum

( 4s + 1 ) ( s + 5 )

I hope that helped, Good luck! (:

8 0

4 years ago

What's x - y (x = 5, y = -5)​

What's x - y (x = 5, y = -5)