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
olga2289 [7]
3 years ago
15

Seven more than twice a number is equal to 21. Find all the numbers that make this sentence is true.

Mathematics
1 answer:
julsineya [31]3 years ago
6 0

x = a number

7 + 2x = 21

Subtract 7 from both sides

2x = 14

Divide both sides by 2

x = 7

7 is the only number that makes this sentence true.

You might be interested in
The average of three test scores is 82. The scores on the first test and the third test are the same. The score on the second te
kondaur [170]

Answer:

84

Step-by-step explanation:

Let x = the test

(x + x + ( x - 6))/3=82

((3x - 6)/3) • 3= 82 • 3

3x - 6 + 6 = 246 + 6

<u>3x</u> = <u>252</u>

3        3

x = 84

5 0
3 years ago
I really need this please don’t answer it wrong!
enyata [817]

Answer:

Step-by-step explanation:

Squaring a^(-2) results in a^(-4).

Squaring 8^7 results in 8^14.

Putting these factors together, we get

8^14

-------                     this is equivalent to Answer C.

a^4

5 0
3 years ago
Read 2 more answers
Five less than the product of 3 and a number of 40 . Write in an equation
vagabundo [1.1K]

Answer:

I don't get the "number of 40" part, but here's my best shot!

3(40x)-5

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
A recipe uses 5 cups of milk to make 25 servings. If the same amount of milk is used
Papessa [141]

Answer:

https://youtu.be/ssE-HVO4SY4

5 0
2 years ago
Please help I will mark brainliest for correct answers!​
Talja [164]

Answer:

E

Step-by-step explanation:

Well there is a lot more higher numbers than lower numbers, so the box would be closer to the right, and the left rectangle piece should be smaller than that of the left rectangular piece.

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the solution to this inequality?<br> -4X &gt; 500
    9·1 answer
  • What is the gcf of 16 24 32
    10·2 answers
  • Simplify the expression
    13·1 answer
  • What is the next logical statement in the proof below?
    5·2 answers
  • HELP<br> If you don’t know it then please don’t answer.
    6·1 answer
  • Yousef buys 40 tokens at the carnival. He gives his sister tokens for 5 kiddie rides. He wants to use the remaining token for th
    6·1 answer
  • Sean determines that the triangle shown in the diagram has angle measures of 40°, 40°, and 100°. Is Sean correct?
    7·2 answers
  • Please help me I need help!!!
    5·1 answer
  • What is 90 plus 60 plus 7x-12
    14·1 answer
  • X - 5 &lt; - 3 <br> Or<br> X + 8 &gt; 2
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!