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Dennis_Churaev [7]
3 years ago
5

Please simplify/evaluate 7x - 2x + 30

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
6 0

Answer:

5x+30

Step-by-step explanation:

7x−2x+30

7x+−2x+30

Combine Like Terms:

7x+−2x+30

(7x+−2x)+(30)

5x+30

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The null space for the matrix is spanned by the vector:_______
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Answer:

True

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The null space of matrix is set of all solutions to matrix. The linearly independent vectors forms subset which are spanned and forms the null space. The null space of vector can be found by reducing its echelon. The non zero rows formed are the null spaces of matrix.

8 0
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What fraction of a gallon is 3 pints?
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Solve the following system by graphing.
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7 0
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Read 2 more answers
The cost of an uber ride, y, based on miles, x is represented by y = 2/3x + 4. How much does a 21-mile ride cost ?
dangina [55]

Answer:

Step-by-step explanation:

Let the cost of the Uber ride be represented by y in dollars.

Let the number of miles that the Uber rides be represented by x.

The equation relating x and y is expressed as

y = 2/3x + 4.

This is a slope intercept form equation. The slope is 2/3 and it represents the cost per mile.

The cost of a 21 mile ride will be

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y = 2/3 × 21 + 4 = 14 + 4 = 18

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Part B) The $46 ride will cost

Substituting y = 46 into the given equation, it becomes

46 = 2x/3 + 4 =

46 - 4 = 2x/3

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The $46 ride will be 63 miles

6 0
3 years ago
A manufacturer packages coffee beans in 50 kg
WARRIOR [948]

Answer:

49.65-50.35

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7 0
2 years ago
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