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
Shalnov [3]
3 years ago
7

Three times the sum of a number and four is twenty-one. Find the number. The number is ___

Mathematics
2 answers:
Nady [450]3 years ago
6 0

Answer:

The answer to your question is: x = 3

Step-by-step explanation:

                                            3(x + 4) = 21

                                              x  + 4 = 21/3

                                             x + 4 = 7

                                            x = 7 - 4

                                            x = 3

cupoosta [38]3 years ago
5 0

Answer:

n = 9/3 = 3

Step-by-step explanation:

Translating these words into symbolic statements:

3(n + 4) = 21.

Perform the indicated multiplication, obtaining:

3n + 12 = 21

Combine the constant terms:  3n = 9

Finally, solve this for n: n = 9/3 = 3

You might be interested in
Helpppppp fastttttttttt
crimeas [40]

Answer:

d

Step-by-step explanation:

8 0
3 years ago
You randomly guess the answers to two questions on a multiple-choice test. Each question has three choices: A, B, and C.
Fantom [35]

Answer: pick a bc its the first lettr of the alphebet

4 0
3 years ago
First, he heated 6 cups of milk and 1 pint of cream in a large pot. Then, he stirred in 4 cups of melted chocolate. How many cup
jasenka [17]

Answer:

12 cups!

Step-by-step explanation:

7 0
3 years ago
What is the solution set to 6+2n>12 Is n >3
Stolb23 [73]

6 + 2n > 12    |subtract 6 from both sides

2n > 6     |divide both sides by 2

n > 3

4 0
3 years ago
Simplify the following expressions. Put your a<br> (3x³-5x² - 7+ 4x4) + (9x4 - 10x² - 5x³ + 3) =
leonid [27]

first we need to get rid of the ( ) so that we can see what the question really says

(3x³-5x² - 7+ 4x4) + (9x4 - 10x² - 5x³ + 3)

= 3x³-5x²-7+4x⁴+9x⁴-10x²-5x³+3

now all we need to do is add up the numbers with the same x's

<em>3x³</em>-5x²-7<u>+4x⁴+9x⁴</u>-10x²<em>-5x³</em>+3

= 13x⁴-2x³-15x²-4

6 0
2 years ago
Other questions:
  • Two sides of a triangle are 9 cm and 12 cm long. What is the range of possible lengths for the third side? Enter your answer in
    13·2 answers
  • Is a cube a prism please help
    13·1 answer
  • PLEASE HELP QUICK!! !!20 POINTS!!
    5·1 answer
  • A rectangular prism has a length of 6 cm, a width of 3 cm, and a height of 412 cm. The prism is filled with cubes that have edge
    15·2 answers
  • Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    7·1 answer
  • The high school choirs participating in a fundraising sales contest. The choir will receive a bonus if they make 20 sales in the
    13·1 answer
  • Find the values of x and y.
    15·1 answer
  • This season, the probability that the Yankees will win a game is 0.6 and the probability that the Yankees will score 5 or more r
    14·1 answer
  • AABC is an isosceles triangle, with ZA being the vertex angle.
    7·1 answer
  • I need some help please. Select the function that is modeled by the graph.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!