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2 years ago

Subtract: (–3x2 + 7 – 2x) – (6 + 7x – 4x2)

Mathematics

1 answer:

Aneli [31]2 years ago

5 0

The subtraction of the given expression will be (x²-9x +1).

<h3>What is subtraction?</h3>

The method of removing or deleting anything from the given set will be defined as subtraction. It is represented by the negative sign '-'.

The subtraction will be calculated as:-

E = (–3x² + 7 – 2x) – (6 + 7x – 4x²)

Arrange the terms in the above expression.

E = ( -3x²+4x²-2x-7x-6+7)

E = ( x² - 9x + 1 )

Therefore the subtraction of the given expression will be (x²-9x +1).

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18 2/5 - n = -10 1/3

Wewaii [24]

Answer:

The answer is $n=28\frac{11}{15}$ .

Step-by-step explanation:

Given:

18 2/5 - n = -10 1/3.

Now, to solve the equation:

$18\frac{2}{5} - n = -10 \frac{1}{3}$

Converting the mixed fractions to improper:

⇒ $\frac{92}{5} -n=-\frac{31}{3}$

Moving the numbers on one side and variable to the other:

⇒ $\frac{92}{5} +\frac{31}{3}=n$

Now, solving the factions:

⇒ $\frac{92\times 3+31\times 5}{15}=n$

⇒ $\frac{276+155}{15}=n$

⇒ $\frac{431}{15}=n$

⇒ $28\frac{11}{15}=n$

Therefore, the answer is $n=28\frac{11}{15}$ .

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3 years ago

Sally can paint a room in 4hours while it takes Steve 3 hours to paint the same room. How long would it take them to paint the r

Pachacha [2.7K]

Answer:It would take 1.700 hours.

Step-by-step explanation:

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2 years ago

Read 2 more answers

Function and Reasoning:

Akimi4 [234]

The number of calories per ounce of soda is 10

<h3>Part A: Represent the relationship between the number of calories and the number of ounces</h3>

The given parameters are:

Calories = 50

Ounces = 5

Let the number of calories be y and the ounces be x.

So, we have:

y = kx

Substitute y = 50 and x = 5

50 = 5k

Divide by 5

k = 10

Substitute k = 10 in y = kx

y = 10x

See attachment for the graph of the relationship between the number of calories and the number of ounces

<h3>Part B: What is the number of calories per ounce of soda?</h3>

In (a), we have:

k = 10

This means that the number of calories per ounce of soda is 10

<h3>Part C: How does the unit rate relate to the slope of the line in the graph above? </h3>

The unit rate and the slope represent the same and they have the same value

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1 year ago

2(1-4)-3(2+1) equals what

AysviL [449]

It would be -15 as the answer

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3 years ago

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Julie and Brian are financing $245,000 to purchase a house. they obtained a 30/5 balloon mortgage at 5.25%. What will their ball

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This question had the following choices:
<span>A) $223,884.91
B) $226,753.98
C) $229,679.66
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I used the Online Balloon Payment Loan Calculator and got this amount $226,753.92. This is nearest to Choice B.

For manual computation, use this formula in the 2nd attachment.

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2 years ago