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
Gnom [1K]
3 years ago
9

7(r − 1) = 6(r + 1) please show work

Mathematics
2 answers:
tatuchka [14]3 years ago
4 0

Answer: r−13

Step-by-step explanation:     Step 1.  (7 • (r - 1)) -  6 • (r + 1)

                                                Step 2.  7 • (r - 1) -  6 • (r + 1)

DerKrebs [107]3 years ago
3 0

Answer:

r=13

Step-by-step explanation:

7r-7=6r+6

7r-7+7=6r+6+7

7r=6r+13

7r-6r=6r+13-6r

r=13

You might be interested in
What is the fourth term in the binomial expansion of (2x – y) 7?
nata0808 [166]

Answer:

(7C4) (2x)^4 (-y)^{7-4}

And replacing we got:

35 (2^4) x^4 (-y)^{-3}

And then the final term would be:

-560 x^4 y^3

Step-by-step explanation:

For this case we have the following expression:

(2x-y)^7

And we can use the binomial theorem given by:

(x+y)^n =\sum_{k=0}^n (nCk) x^k y^{n-k}

And for this case we want to find the fourth term and using the formula we have:

(7C4) (2x)^4 (-y)^{7-4}

And replacing we got:

35 (2^4) x^4 (-y)^{-3}

And then the final term would be:

-560 x^4 y^3

8 0
2 years ago
What is the y-intercept of y = -3x?
Greeley [361]

Answer:

( 0, 0 )

Step-by-step explanation:

In this equation, you can see that there is not y-intercept, and since there is no y-intercept, that means that it will be "0", and that the line goes straight to the origin ( 0, 0 )

Hope this helped!

Have a supercalifragilisticexpialidocious day!

8 0
2 years ago
-5.5 + 3.7 can u please help will mark branliest
Nadusha1986 [10]

Answer:

-1.8

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
It was the wrong answer for my assignment
STALIN [3.7K]

Answer:

which one are you talking about?

Step-by-step explanation:

explain

4 0
2 years ago
Read 2 more answers
Which rule explains why these triangles aren't congruent? see picture below.
Lisa [10]

Answer:

SSS

Step-by-step explanation:

Well, the picture says asks why the triangles are congruent but your question asks why they aren't congruent, so I will just assume that you made a typo, and you really meant: "Which rule explains why these triangles are congruent?"

Well, the triangles have two congruent sides, and they have a common shared side that are both congruent (due to reflexive property), so the triangle theorem SSS (Side-Side-Side) proves that the triangles are both congruent.

7 0
3 years ago
Other questions:
  • Write the number with the same values as 28tens
    5·2 answers
  • If 2x=4 and 3x=6 what is x?
    11·1 answer
  • What is 8.49x10^-7 in decimal form?
    11·2 answers
  • Solve the following equation algebraically:
    14·2 answers
  • N^3 = n? × n^-3<br><br><br> What is the substitute for the question mark?
    6·1 answer
  • Martin had to buy some cleaning materials.
    13·1 answer
  • What is the length of a segment with endpoints at F(6, 4) and G(14, 19)? Round to the nearest whole number.
    9·1 answer
  • Please answer ... thanks
    14·1 answer
  • Please help me ! !!!
    12·1 answer
  • What is John and Linda paid each hour
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!