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2 years ago

7

Robert has a marble collection 1/7 of his marbles are blue 2/7 of his marbles are green. What fraction of Robert’s marbles are n

ot blue or green?

1 answer:

-BARSIC- [3]2 years ago

7 0

Answer:

4/7 of his marbles aren't blue or green.

Step-by-step explanation:

1/7 + 2/7 = 3/7 marbles are either blue or green in total.

7/7 - 3/7 = you're left with 4/7 not blue or green marbles.

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3 years ago

The volume of a rectangular prism is 2x^3 - 6x^2 + 8x , and the volume of a cube is 27x^3. What is the total volume of the prism

AleksAgata [21]

Answer:

$\displaystyle V_{P + C} = 29x^3 - 6x^2 + 8x$

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Algebra I</u>

Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify.</em>

<em /> $\displaystyle V_P = 2x^3 - 6x^2 + 8x$ <em />

<em /> $\displaystyle V_C = 27x^3$ <em />

<em />

<u>Step 2: Find Combined Volume</u>

[Set up] Add: $\displaystyle V_P + V_C = V_{P + C}$
Substitute in variables: $\displaystyle V_{P + C} = 27x^3 + 2x^3 - 6x^2 + 8x$
Combine like terms: $\displaystyle V_{P + C} = 29x^3 - 6x^2 + 8x$

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Answer:

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Ans. - 17

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3 years ago