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3 years ago

How to answer (2n + 2)(6n + 1)

Mathematics

2 answers:

Murrr4er [49]3 years ago

8 0

Answer:

Step-by-step explanation:

(2n+ 2)(6n+ 1)

2n+6n=8n

1+2=3

=8n+3

Andru [333]3 years ago

6 0

Answer:

P.E.M.D.A.S, Then combine like terms.

Step-by-step explanation:

(2n +2)(6n + 1)

P.E.M.D.A.S tells you to do parenthasis first, but because both equations are in parenthasis, follow the equation in order. Next, combine like terms.

(2n + 6n)(2+1)

2n + 6n = 8n

2 + 1 = 3

Isolate the variable

8n * 3

8n/ 8 = n

8/ 3 = 2.6

n = 2.6

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Solve the system of equations 4x+5y=-1 and -5x-8y=10 by combining the equations.

Nimfa-mama [501]

The solution of the equation are as follows:

x = 6 and y = -5

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4x + 5y = -1

-5x - 8y = 10

Therefore,

20x + 25y = -5

-20x - 32y = 40

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y = -5

Hence,

4x + 5(-5) = -1

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4x = 24

x = 24 / 4

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2 years ago

Stella divides 12/8 on her calculator and gets 1.5. Assuming that Stella has not adjusted the calculator's settings, what do the

Romashka [77]

Stella divided 12/8.

If we divide 12 by 8, we get exactly 1.5.

Let us check given options one by one .

A) Stella made an error : Stella didn't made an error because it's just division of two numbers.

B) The answer is exactly 1.5. : On dividing 12 by 8, we get exactly 1.5, so this option is correct.

C) The calculator rounded the answer. : On dividing 12 by 8, we get exactly 1.5. So, no rounding is required.

D) The calculator truncated the answer. : On dividing 12 by 8, we get exactly 1.5. So, no truncation in the answer.

Therefore, correct option is B) The answer is exactly 1.5.

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3 years ago

PLEASE HELP Which expression represents the difference quotient of the function f (x) = negative StartRoot 2 x EndRoot?

natali 33 [55]

Answer:

c is the correct option

Step-by-step explanation:

from,

f'(x) = h >0 f(x + h) - f(x)

f(x) = - √2x

f(x + h) = - √(2x + h)

f'(x) = h>0 -√(2x + h) - √2x

rationalize the denominator

= h>0 -√(2x + h) + √2x (-√(2x + h) - √2x)

h (-√(2x + h) - √2x)

= h>0 4x + 2h - 4x

h(-√(2x + h) -√2x)

= h>0 2h

h(-√(2x+h) - √2x)

= h>0  2 

-√(2x+h) - √2x

5 0

3 years ago

Read 2 more answers

What is the slope of a line that is perpendicular to the graph of y= 5x + 5?

AVprozaik [17]

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3 years ago

Evaluate the expression. [6(22 + 4)2 − 2(19 + 3)2]0

Nikolay [14]

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3 years ago

How to answer (2n + 2)(6n + 1)​

How to answer (2n + 2)(6n + 1)