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liberstina [14]
3 years ago
8

Mary rolls two dice. She adds the numbers on the two dice. What is the chance of this sum being twelve?

Mathematics
2 answers:
jonny [76]3 years ago
5 0

Answer:

10%

Step-by-step explanation:

sorry if u fail yeahh

prisoha [69]3 years ago
5 0
Im not sure? But my guess is 40% sorry if its not.
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NEED HELP FOR EXAMS TOMORROW
alexandr1967 [171]

Answer:

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Step-by-step explanation:

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7 0
2 years ago
12r-5 61°<br> R<br> A) 790<br> C) 140°<br> B) 70°<br> D) 970
Yanka [14]

Answer:

79 because x = 7 so 12 x7 - 5 =79

5 0
2 years ago
Help I cannot figure this question out.
netineya [11]

Answer:

B. x = -1 ± i

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

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

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

<u>Algebra II</u>

  • Imaginary Numbers: √-1 = i

Step-by-step explanation:

<u>Step 1: Define</u>

x² + 2x = -2

<u>Step 2: Identify Variables</u>

  1. Rewrite Quadratic in Standard Form [Addition Property of Equality]:        x² + 2x + 2 = 0
  2. Break up Quadratic:                                                                                        a = 1, b = 2, c = 2

<u>Step 3: Solve for </u><em><u>x</u></em>

  1. Substitute in variables [Quadratic Formula]:                                                \displaystyle x=\frac{-2 \pm \sqrt{2^2-4(1)(2)}}{2(1)}
  2. [√Radical] Evaluate exponents:                                                                     \displaystyle x=\frac{-2 \pm \sqrt{4-4(1)(2)}}{2(1)}
  3. Multiply:                                                                                                           \displaystyle x=\frac{-2 \pm \sqrt{4-8}}{2}
  4. [√Radical] Subtract:                                                                                        \displaystyle x=\frac{-2 \pm \sqrt{-4}}{2}
  5. [√Radical] Factor:                                                                                        \displaystyle x=\frac{-2 \pm \sqrt{-1}\sqrt{4}}{2}
  6. [√Radicals] Simplify:                                                                                       \displaystyle x=\frac{-2 \pm 2i}{2}
  7. Factor:                                                                                                             \displaystyle x=\frac{2(-1 \pm i)}{2}
  8. Divide:                                                                                                             \displaystyle x = -1 \pm i
3 0
3 years ago
Factor the expression.<br> X^2- 10xy + 24y?
lana66690 [7]

Answer:

The expression is not factorable with rational numbers.  x^2-10xy + 24y

Step-by-step explanation:

7 0
3 years ago
HELPPPPPPPPPPPPPPPPPPPP
ahrayia [7]

Answer:

Prisms have two congruent -- or identical -- bases, and pyramids only have one base. The shape of the base on pyramids and prisms can vary, depending on the shape of the overall three-dimensional object. For example, the base could have a square, rectangle, triangle, hexagon, pentagon or octagon shape.

Step-by-step explanation:

7 0
2 years ago
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