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2 years ago

What is the solution of the equation? 8d + 2d + 6d + 9 - 6d = 0

Mathematics

2 answers:

serg [7]2 years ago

8 0

Answer:

10d + 9 = 0

Step-by-step explanation:

Simple explanation:

1. 8d + 2d + 6d + 9 - 6d = 0

2. 16d + 9 - 6d = 0

3. Ans: 10d + 9 = 0

Thorough explanation

1. Solve the equation using BIMDAS OR BEDMAS - whatever acronym you were taught

2. Since there are addition and subtraction in this equation we need to solve it from left to right.

3. Re-arrange the equation by putting like terms together - if that makes sense:

So 8d + 2d + 6d + 9 - 6d = 0

Becomes 8d + 2d + 6d - 6d + 9 = 0

4. Then you simply simplify the equation (Remember, go from left to right)

5. (8+2+6)d - 6d + 9 = 0

6. 16d - 6d + 9 = 0

7. (16-6)d + 9 = 0

8. Ans: 10d + 9 = 0

You can leave it at here because you only need to solve the equation. However, if the question says to "solve for d" (which is not the question being asked rn), then take 9 from both sides: 10d + 9 - 9 = 0 - 9

Which gives you: 10d = -9

Then divide by 10

10d/10= -9/10

Ans: d = -9/10

d would equal negative nine over ten

Leni [432]2 years ago

4 0

Answer:

Step-by-step explanation:

8d+2d+6d+9-6d = 0

First, combine like terms, so it would become;

10d+9 = 0

Then, separate anything without a variable;

10d = -9

Then you divide;

d= -0.9

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There were approximately 1.6 * 10 pieces of mall processed by the United States Postal

mihalych1998 [28]

Answer:

x = 2.13 × 10^11

Approximately 2.13 × 10^11 mails were processed in 2006

Completed question;

There were approximately 1.6 * 10^11 pieces of mall processed by the United States Postal

Service in 2012. This is about 75% of the number of pieces of mail processed in 2006.

Approximately how many pieces of mail were processed by the United States Postal Service in

2006

Step-by-step explanation:

Let x represent the number of mails processed in year 2006

Given;

Number of mails processed in 2012 N = 1.6 × 10^11

Number of mails processed in 2012 N is about 75% of the number of pieces of mail processed in 2006.

So;

N = 75% of x

N = 0.75x

x = N/0.75

x = (1.6 × 10^11)/0.75

x = 2.13 × 10^11

Approximately 2.13 × 10^11 mails were processed in 2006

3 0

3 years ago

Question 18

kobusy [5.1K]

Answer:

Undefined

Step-by-step explanation:

$y=-7$ has a slope of $0$ , since it is a horizontal line. The only types of lines that are perpendicular to horizontal lines are vertical lines, which are usually in the form $x=a$ (where $a$ is any real number). Vertical lines have an undefined slope, so the answer is undefined. Hope this helps!