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
Shtirlitz [24]
3 years ago
13

Find r if 3(r - 7) = 4(2 - 2r) + 4

Mathematics
2 answers:
Arturiano [62]3 years ago
4 0

Answer:

r=3

Step-by-step explanation:

3(r - 7) = 4(2 - 2r) + 4

Distribute

3r -21 = 8 -8r +4

Combine like terms

3r -21 = 12 -8r

Add 8r to each side

3r +8r-21 = 12 -8r+8r

11r -21 = 12

Add 21 to each side

11r -21+21 =12+21

11r = 33

Divide each side by 11

11r/11 = 33/11

r = 3

irina [24]3 years ago
3 0

Answer:

Step-by-step explanation:

3(r - 7) = 4(2 - 2r) + 4

3r+(-21)=8+(-8r)+4

-21+8+4=3r+(-8r)

-9=-5r

You might be interested in
There were 51 Elementary schools in Greenville County. Let's pretend that each elementary school at 805 students how many Elemen
aksik [14]

Answer:

  41,055

Step-by-step explanation:

If there are 805 students in each of 51 schools, the total number of students is ...

  (805 students/school) × (51 schools) = 41,055 students

_____

We have to assume that all of the students in the county go to county schools. Apparently, we are to ignore the students that are dropouts or homeschooled, or that go to schools not in the county.

3 0
3 years ago
Read 2 more answers
If y =- 5x + 3, find the value of x when y = 13.
zmey [24]

Answer:

x=2

Step-by-step explanation:

You would first subsitute the y with 13. The you would subtract 3 from 3 and 13. Then you would have  10=5x. Then you would divide 5 by 5 and 10. You will get x = 2  

:)

3 0
2 years ago
Which ordered pair is a reflection of (3, 7) across the y-axis?
stich3 [128]
If its a reflection across the y axis the x value is reflected and the y value stays the same, so (-3,7)
4 0
3 years ago
Can anyone help me plz
mario62 [17]

Answer:

4

Step-by-step explanation:

The answer is four because 10% of the whole tray (40) is 4

Equation:  

.1 * 40 = 4

4 0
2 years ago
Six teachers shared a box of paper equally. How many sheets of paper did each teacher get if 1,347 sheets of paper came in the b
tester [92]

Answer: 224.5

Step-by-step explanation:

The answer is 224.5 because 1347 divided by 6 is 224.5.

4 0
2 years ago
Other questions:
  • A certain pet store has only cats and dogs. The ratio of the number of cats to the
    10·2 answers
  • The expression 1/2mv^2<br> M=1.6x10^3<br> V=3.4x10^3
    8·1 answer
  • The relationship between men’s whole-number shoe sizes and foot lengths is an arithmetic sequence, where an is the foot length i
    10·1 answer
  • Briana has just finished her sixth grade scrapbook.in her scrapbook,47% of the pages include her twin sister,Bethany.The scrapbo
    14·2 answers
  • Write an equation to express the value of h+k
    9·1 answer
  • What is 60% as a ratio out of 100
    11·1 answer
  • A^10x^7xc^12 divided by 7^6xb^4xc^12
    5·1 answer
  • Help please!<br><br> A.<br><br><br> B.<br><br><br> C.<br><br><br> D.
    11·1 answer
  • $16 for 4 books. How much would 12 books cost?
    11·2 answers
  • what is the fill in for the diagram drop downs drop down 1: is it a reflexive property, equivalent equation or transitive proper
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!