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
lana [24]
3 years ago
8

R/3+2=21 solve for r

Mathematics
1 answer:
olchik [2.2K]3 years ago
7 0

Answer:

r=63

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    r/3-(21)=0             r

Simplify   —

           3

r    

 — -  21  = 0

 3     2.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  3  as the denominator :

         21     21 • 3

   21 =  ——  =  ——————

         1        3  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

You might be interested in
Solve the system of linear equations. Check your solution. y=2x-2 <br> y=2x+9
natulia [17]
2X-2=2X+9
Add 2

2X=2X+11
Subract 2X
0= 11

This has no solution to this problem
8 0
3 years ago
Which equation is not equal to 6^3/6^6 ?: 1/6^2 6^-3 1/216 1/6^3
SCORPION-xisa [38]
The answer would be 60 because its multiplication all those numbers

4 0
2 years ago
Consider this system of equations:
alexandr1967 [171]
<span>"For which value of k does the system have no real number solutions?"
The answer is 4, because 4+4</span>≠16.
<span>
"For which value of k does the system have one real number solution?"
</span>The answer is -0.25, because the linear line because tangent with the parent function.


<span>"For which value of k does the system have two real number solutions?"
</span>The answer is 2, because the linear function intercepts the parent function 2 times.

- i hope these are the answers you are looking for. 
5 0
2 years ago
Help me out:)i need an answer as soon as possible!!!
kifflom [539]
Answer is c , got it right
5 0
3 years ago
Simplify, assume the variable represents a positive real number
kotykmax [81]

The simplification of the given expression \sqrt{18y^{21} will be equal to 3\sqrt{2} (y)^{\dfrac{21}{2}}

<h3>What is simplification?</h3>

The process of reducing the complex mathematical expressions into the simplest form is called as the simplification.

The simplification of the given expression will be:

=\sqrt{18y^{21}}\\\\\\=(18)^{\frac{1}{2} } \times (y)^{\frac{21}{2}}\\\\\\=3\sqrt{2}\times y^{\frac{21}{2}}

hence  the simplification of the given expression \sqrt{18y^{21} will be equal to 3\sqrt{2} (y)^{\dfrac{21}{2}}

To know more about Simplification follow

brainly.com/question/723406

#SPJ1

5 0
2 years ago
Other questions:
  • Define Disjoint event
    8·1 answer
  • A boy can swim 75 feet in 12 seconds. What is his rate to the nearest mile per hour?
    8·2 answers
  • Common ratio for 10, -30, 90, -270
    9·1 answer
  • Which equation describes the line that passes through points (2,5) and (0,9)?
    8·1 answer
  • If I have a 93% in a class, how much would it drop if I got a 66%?
    15·1 answer
  • How much tax will be applied to an order for cupcakes that costs $12.75 if the tax rate is 4%?
    8·2 answers
  • Surface area of rectangular prism length6 height2 width4
    13·2 answers
  • #11. The space occupied by a wooden block is 4cm × 2cm × 2cm=_____cm 3 Which is equivalent to_______mililiters​
    6·1 answer
  • 45/43 as a percentage rounded to the nearest tenth?
    11·2 answers
  • How much is 2000 × 36 =? help my please ​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!