All categories

2 years ago

What is the value of n in the equation –(2n + 4) + 6 = –9 + 4(2n + 1)?

Mathematics

2 answers:

ollegr [7]2 years ago

7 0

<h3>Answer:</h3>

5/2

<h3>Step-by-step explanation:</h3>

Start by eliminating parentheses.

... 2n +4 +6 = -9 +8n +4

... 10 = -5 +6n . . . . subtract 2n

... 15 = 6n . . . . . . . add 5

... 15/6 = n = 5/2

_____

<u>Check</u>

(2·5/2 +4) +6 = -9 +4(2·5/2 +1)

5 +4 +6 = -9 +4(5 +1)

15 = -9 +24 . . . . . true, so the answer checks OK

marta [7]2 years ago

4 0

Answer:

THE ANSWER IS 1

Step-by-step explanation:

You might be interested in

What is the value of x?

frez [133]

$\left\{\begin{array}{ccc}x+2y=4&\text{multiply both sides by 5}\\4x-5y=42&\text{multiply both sides by 2}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}5x+10y=20\\8x-10y=84\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad13x=104\qquad\text{divide both sides by 13}\\\\\boxed{x=8}\\\\Answer:\ \boxed{\boxed{x=8}}$

5 0

2 years ago

QUESTION NUMBER ONE

Mashutka [201]

Answer:

$68.85

Step-by-step explanation:

19% of $85 is $16.15

$85 - $16.15 = $68.85

5 0

2 years ago

2. Multiply.<br><br> (3x + 2)(5x^2 - 2x + 6)

alukav5142 [94]

15x^3+4x^2+14x+12
Multiply 3x by every value in the second bracket. Then multiply 2 by every value in the second bracket. Add like terms. (Only answers with the same square are like terms.)

7 0

2 years ago

What's the standard form of eight three million, twenty three thousand,seven

jenyasd209 [6]

Hi I think it is 83,023,007

4 0

2 years ago

If you split a right angle with a ray going through the middle of the right angle, the two angles formed will be ______. Select

Tom [10]

Answer:

Complementary

Step-by-step explanation:

To be complementary, your two angles need to add up to 90 degrees

a right triangle is already 90 degrees so if you cut it through the middle they'd form complementary angles

8 0

3 years ago

Read 2 more answers