All categories

2 years ago

3. The sum of three consecutive numbers is 42. What are the numbers?

Mathematics

1 answer:

Zanzabum2 years ago

3 0

Answer:

13 + 14 + 15

Step-by-step explanation:

n + (n + 1) + (n +2) =42

n + n + n + 1 + 2 = 42

3n + 3 = 42

(subtract 3 from both sides)

3n = 39

(divide both sides by 3)

n = 13

(solve)

n + (n + 1) + (n +2) =42

13 + (13 + 1) + (13 + 2) = 42

13 + (14) + (15) = 42

13, 14, 15

(Hope this helps, have a nice day!)

You might be interested in

HELP WITH ONE MATH QUESTION!!! 20 POINTS AND WILL MARK BRAINLIEST

Jobisdone [24]

Answer:

6/h = 10/40

Step-by-step explanation:

6/h = 10/40

8 0

2 years ago

What is the solution of the system x − 3y = –13 and 5x + 7y = 34? A. `x = (6)/(5)`, y = 4 B. `x = (7)/(2), y = (9)/(2)` C. `x =

Masteriza [31]

For this case we have the following system of equations:

$x-3y = -13\\5x + 7y = 34$

From the first equation we clear "x":

$x = -13 + 3y$

We substitute in the second equation:

$5 (-13 + 3y) + 7y = 34$

We apply distributive property:

$-65 + 15y + 7y = 34$

We add similar terms:

$-65 + 22y = 34$

We add 65 to both sides:

$22y = 34 + 65\\22y = 99$

We divide between 22 on both sides:

$y = \frac {99} {22}\\y = \frac {9} {2}$

We look for the value of the variable "x":

$x = -13 + 3 \frac {9} {2}\\x = -13 + \frac {27} {2}\\x = \frac {-26 + 27} {2}\\x = \frac {1} {2}$

Thus, the solution of the system is:

$(x, y): (\frac {1} {2}, \frac {9} {2})$

ANswer:

$(x, y): (\frac {1} {2}, \frac {9} {2})$

5 0

2 years ago

Read 2 more answers

Brainly + 30 points!<br>Find the values of a, b, and c

torisob [31]

Answer:

23 17 31

Step-by-step explanation:

igotitright

6 0

2 years ago

What is the solution to 5(3-x)?

Anit [1.1K]

The answer is 15 - 5 x

Multiply 5 by 3 ( 15 )
Multiply 5 by -x ( -5x )

I hope this helps and please mark brainliest!

8 0

1 year ago

Please help with question 6

Kitty [74]

Answer:

y = -3x - 1

Use the methods on your other questions.

6 0

1 year ago