1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
SashulF [63]
3 years ago
13

find three consecutive numbers such that three times the first number is equal to 9 more than the sum of the other two.

Mathematics
1 answer:
Goryan [66]3 years ago
6 0

Answer:

12, 13, 14

Step-by-step explanation:

Three consecutive numbers means three numbers in a row, so if n is the first number, the second number is one more than  n (which is n+1) and the third number is one more than that (which is n+2)

So three times (3 x) the first number (n) is equal to (=) nine more than (9 +) the sum of the other two ( (n+1) + (n+2) )

3 times n can be written as 3n

So 3n = 9 + (n+1) + (n+2)

3n = 9 + n + 1 + n + 2

3n = 9 + 1 + 2 + n + n

3n = 12 + 2n

Subtract 2n from each side

3n - 2n = 12 + 2n - 2n

1n = 12

n = 12

So the first number is 12, the second number is 12 + 1 (13) and the third number is 12 + 2 (14)

The numbers are 12, 13, 14

Hope this helps :)

You might be interested in
A triangle has side lengths measuring 20 cm, 5 cm, and n cm. Which describes the possible values of n?
DENIUS [597]
The answer is D. 15 < n < 25.
3 0
3 years ago
Read 2 more answers
Please help with my math
AleksAgata [21]
$1.44

each one cost 0.24
0.24 x 6 = 1.44
7 0
3 years ago
Read 2 more answers
2,3,5,6. Only plz and thank u
vfiekz [6]
For 3, it is an isosceles triangle and it is an acute triangle.
3 0
3 years ago
What is the leading coefficient of the polynomial x^10+29x^4+x^2+8
Makovka662 [10]

Answer:

LC = 1

General Formulas and Concepts:

<u>Algebra I</u>

  • Leading Coefficient - the coefficient for the largest degree variable

Step-by-step explanation:

<u>Step 1: Define</u>

x¹⁰ + 29x⁴ + x² + 8

<u>Step 2: Identify</u>

Largest degree: 10 (from x¹⁰)

Leading Coefficient: 1

8 0
2 years ago
Two vehicles are driving along a straight roadway at a constant speed. At a certain point in time, a car is 1.2 miles away from
Maurinko [17]

Answer:

The expression for the total distance between the car and the landmark in terms of the number of hours spent driving is given as follows;

1.2 = 65 × t

Where t = 1.2/65 = 0.0185 h = 66.46 seconds

Step-by-step explanation:

The parameters given are;

Distance, d between car and landmark = 1.2 miles

Speed of car = 65 miles/hr

Distance between truck and landmark = 0.7 miles

Speed of car = 55 miles/hr

The expression for the total distance between the car and the landmark as a function of time t is given as follows;

Distance, d = Speed, v × Time, t

Therefore, the expression for the total distance between the car and the landmark in terms of the number of hours spent driving is given as follows;

1.2 = 65 × t

Where t = 1.2/65 = 0.0185 h = 66.46 seconds.

7 0
3 years ago
Other questions:
  • Banks and other financial institutions sometimes calculate simple interest based on
    11·1 answer
  • I just need a little help on this ??! Please.
    6·1 answer
  • Expand the number 1120 into its corresponding exponential form. 25 · 5 · 7 52 · 8 22 · 53 · 7 2 · 5 · 7
    10·1 answer
  • 3x^3-24x^2 factor completley
    8·2 answers
  • Please answer this quickly!
    11·1 answer
  • Given m || n, which pair of angles are not vertical angles?
    13·2 answers
  • WHAT IS 9 PLUS 10????????????? NEED HELP​
    14·2 answers
  • Х<br> -3<br> 3 so<br> Plz explain this its a fraction
    9·1 answer
  • Answer the question below
    5·2 answers
  • Solve for x in the following inequality: 3(-2x - 4) &gt; 18
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!