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
german
2 years ago
11

21x =7? A. x=3 B. None of these C. x=147 D. x=28

Mathematics
1 answer:
Varvara68 [4.7K]2 years ago
6 0

Answer: B

Step-by-step explanation:

To isolate x, you divide both sides by 21

21x=7

\frac{21x}{21}=\frac{7}{21}

x = 7/21

Simplify by dividing both the numerator and denominator by 7

x = 1/3

Since, 1/3 is not an option, B is the correct answer

You might be interested in
How do I solve this ???
egoroff_w [7]
-3*-5 = 15 

<span>When the signs are the same the answer is positive.</span>
5 0
3 years ago
Removing which point from the coordinate plane would make the graph a function of x? mc006-1.jpg
Marianna [84]
B. (-2,1)

By checking the x coordinates, I saw there was two -2, but the output was different, so one of them had to be taken out to make it a function.

Function: Every input must have one out must.
5 0
3 years ago
Can you show how you did it?<br> 8.31 - 3.43 =
d1i1m1o1n [39]

Answer:

4.68

Step-by-step explanation:

Remember to line up the decimal point. Subtract as ordinarily.

8.31

-3.43

--------

4.68

4.68 is your answer

~

7 0
3 years ago
Emma have 450000 dollars
kap26 [50]

Answer:

Is that all to the problem?

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
15 + 3t - 5 - 8t what is the ANSWER to this
Vikki [24]
<span><span><span>15+<span>3t</span></span>−5</span>−<span>8t</span></span><span>=<span><span><span><span><span>15+<span>3t</span></span>+</span>−5</span>+</span>−<span>8t</span></span></span>Combine Like Terms:<span>=<span><span><span>15+<span>3t</span></span>+<span>−5</span></span>+<span>−<span>8t</span></span></span></span><span>=<span><span>(<span><span>3t</span>+<span>−<span>8t</span></span></span>)</span>+<span>(<span>15+<span>−5</span></span>)</span></span></span><span>=<span><span>−<span>5t</span></span>+10</span></span>Answer:<span>=<span><span>−<span>5t</span></span>+<span>10</span></span></span>
8 0
3 years ago
Other questions:
  • Example: y = -2x and y = x + 3
    6·1 answer
  • 7. Find the value of:<br> a) The number when 40% of the number is 10
    5·2 answers
  • Problems 11-16, find the domain of each function.
    14·1 answer
  • A circle has the diameter of 9 5/8 in what is the radius of the circle?
    11·1 answer
  • Solve the inequality. Please!
    14·1 answer
  • Please help!!
    11·1 answer
  • -8(2z - 7c) use z = 5 and c = 2
    9·2 answers
  • Instructions: Use the ratio of a 30-60-90 triangle to solve for the variables. Leave your answers as radicals in simplest form.
    11·2 answers
  • An animal shelter provides a bowl with 1.15 liters of water for 6 cats. About how much water will be left after the cats drink t
    15·1 answer
  • I need to know if my answer is correct it is the circled one I used systems of equations to solve this one
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!