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lions [1.4K]
3 years ago
5

What's x - y (x = 5, y = -5)​

Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
7 0

Answer:

10

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:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Algebra I</u>

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

<u>Algebra II</u>

  • Imaginary Roots: √-1 = i

Step-by-step explanation:

<u>Step 1: Define</u>

6x² = 2x - 1

<u>Step 2: Rewrite</u>

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

<u>Step 3: Identify Variables</u>

a = 6

b = -2

c = 1

<u>Step 4: Solve for </u><em><u>x</u></em>

  1. Substitute [QF]:                       \displaystyle x=\frac{2\pm\sqrt{(-2)^2-4(6)(1)} }{2(6)}
  2. Exponents:                              \displaystyle x=\frac{2\pm\sqrt{4-4(6)(1)} }{2(6)}
  3. Multiplication:                         \displaystyle x=\frac{2\pm\sqrt{4-24} }{12}
  4. (Square Root) Subtract:         \displaystyle x=\frac{2\pm\sqrt{-20} }{12}
  5. Factor:                                    \displaystyle x=\frac{2\pm \sqrt{-1} \sqrt{20} }{12}
  6. Simplify:                                 \displaystyle x=\frac{2\pm 2i\sqrt{5} }{12}
  7. Factor GCF:                           \displaystyle x=\frac{2(1\pm i\sqrt{5} )}{12}
  8. 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
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