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
iris [78.8K]
3 years ago
10

The sum of twice a number and three is 21. find the number

Mathematics
1 answer:
Alisiya [41]3 years ago
7 0

Answer:

sum of twice a number and three is 21

2x + 3 = 21

x = 9

You might be interested in
If two angles are ​complementary ​angles and they measure m​ ∠1=(x + 5)​ and ​m∠2=(5x + 13)​. Find x and the measure for both an
Korolek [52]

<em>5</em><em>X</em><em>+</em><em>1</em><em>3</em><em>+</em><em>X</em><em>+</em><em>5</em><em>=</em><em>9</em><em>0</em><em>°</em><em>(</em><em>SUM</em><em> </em><em>OF</em><em> </em><em>COMPLEMENTRY</em><em> </em><em>ANGLE</em><em> </em><em>IS</em><em> </em><em>EQUAL</em><em> </em><em>TO</em><em> </em><em>9</em><em>0</em><em>°</em><em>)</em>

<em>6</em><em>+</em><em>1</em><em>8</em><em>=</em><em>9</em><em>0</em><em>°</em>

<em>6</em><em>X</em><em>=</em><em>9</em><em>0</em><em>°</em><em>-</em><em>1</em><em>8</em><em>°</em>

<em>X</em><em>=</em><em>7</em><em>2</em><em>°</em><em>/</em><em>6</em>

<em>X</em><em>=</em><em>1</em><em>2</em><em> </em><em>°</em><em>ANSWER</em>

6 0
3 years ago
PLZ HELP ASAP! WILL MARK BRAINLIEST!!
stepan [7]

Answer:

I believe this is right.  Answer: 6/7

Step-by-step explanation:

5+1 = 6

The denominator stays the same.

6 0
3 years ago
What is the value of h(x)=x/2 when x=-2
djverab [1.8K]
H(-2)=(-2)/2
h(-2)=-2
hope this helps!!!
4 0
3 years ago
Read 2 more answers
Shaniqua has 12 apples to divide into eating and using in an apple pie. If she puts at least 3 apples in each group, how many di
ANEK [815]

Answer:

4..?

Step-by-step explanation:

4 0
3 years ago
Tracy has a cell phone plan that provides 250 free minutes each month for a flat rate of $29. For any minute of 250, Tracy is ch
Kisachek [45]
Your function is:

Y= 29 + 0.35x

X represents the money that Tracy is charged per minute


7 0
3 years ago
Read 2 more answers
Other questions:
  • A snowmobile traveled 32 miles in 213 hours.
    11·1 answer
  • Name the property the equation illustrates.
    11·2 answers
  • the area of a bookshelf is 216 square inches if the length of the bookshelf is 36 inches what is the width of the bookshelf?
    13·1 answer
  • What is the inter-quartile range of the given data set? <br> 2<br> 3<br> 6
    9·2 answers
  • A rocket is launched into the air. The height h(t), in yards, of the rocket is a function of time, t, in seconds, as shown in th
    6·1 answer
  • What are the solutions of 3x²-x+7=0?
    7·2 answers
  • A trapezoid has an area of 24 square meters. The length of the bases of the trapezoid are 5 meters and 7 meters. What is the hei
    5·1 answer
  • How do i work out: <br> (y+3) (y-3)<br> ------- = --------- + 2<br> 4 5
    14·1 answer
  • One dozen roses cost $8.16. Two dozen roses cost $16.32.
    15·1 answer
  • PLEASE HELP!!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!