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
d1i1m1o1n [39]
3 years ago
5

Solve 7r+ 2 = 5(r – 4) ​

Mathematics
2 answers:
AveGali [126]3 years ago
6 0

Multiply the bracket by 5

I used PEMDAS

P= parenthesis

E= exponents

M=multiplication

D= division

A= addition

S= subtraction

7r+2= 5(r-4)

7r+2= 5r-20

Move 5r to the left hand side . Positive 5r changes to negative 5r

7r-5r+2= 5r-5r-20

2r+2=- 20

2r+2-2= -20-2

Move positive 2 to the right hand side. Changes to negative -2

2r+2-2= -20-2

2r= -22

Divide by 2 for 2r and -22

2r/2= -22/2

r= -11

Answer is r= -11

babunello [35]3 years ago
3 0

Answer:

r = (-11)

Step-by-step explanation:

7r + 2 = 5(r – 4) ​

7r + 2 = 5r – 4 * 5

7r + 2 = 5r – 20

7r - 5r = -20 - 2

     2r = -22

       r = -22/2 = (-11)

You might be interested in
A meteor crater is 3400 feet in diameter. Approximate the distance around the crater. Use 3.14 for piπ.
pishuonlain [190]
\bf \textit{distance around the crater, or Circumference of a circle}
\\\\\\
C=2\pi r\qquad 
\begin{cases}
C= circumference\\
r=radius=\frac{diameter}{2}\\
--------------\\
diameter=3400\\
r=\frac{3400}{2}
\end{cases}
\\\\\\
C=2\pi \cdot \frac{3400}{2}
5 0
3 years ago
What is the volume of the rectangular pyramid shown below?<br>9 in.<br>8 in.<br>7<br>in.​
likoan [24]

Answer:

Step-by-step explanation:

To calculate the volume of a pyramid with a rectangular base, find the length and width of the base, then multiple those numbers together to determine the area of the base. Next, multiply the area of the base by the height of the pyramid. Take that result and divide it by 3 to calculate the pyramid's volume!

I cant do this until I know What number is what.

Which is length?

Which is height?

and which is width?

4 0
4 years ago
Hi!! How do I find the value of x? could you help me??​
goldfiish [28.3K]

Answer:

To find the value of x, bring the variable to the left side and bring all the remaining values to the right side. Simplify the values to find the result.

hope this helps in some way!

8 0
3 years ago
Read 2 more answers
Write the expression (4x-2) x 6(2x+7) in the standard from of a quadratic expression, ax^2+bx+c. What are the coefficients of ea
umka21 [38]
A=48
b=144
c=-84

First, you simplify the second equation by multiplying 6 to 2x and 6 to 7.  Then, you get the two equations, (4x-2) times (12x+42).  You then use the FOIL method, multiplying 4x to 12x, 4x to 42, -2 to 12x, then -2 to 42.  Simplify.  Then number before x squared is your a value, value before x is b, and the value without x is c.


5 0
3 years ago
PLS IM SO CONFUSLEZZZD <br> 2+2
cluponka [151]
The answer is 4 hope this helps kindergartner
7 0
3 years ago
Other questions:
  • 64= what to the 2nd power
    6·2 answers
  • What does 3/4 on top number line represent?
    11·2 answers
  • What’s one minus two
    10·2 answers
  • What expression represents five times the quotation of some number and ten​
    14·1 answer
  • Harry and Selma start driving from the same location. Harry drives 42 miles north while Selma drives 144 miles east. How far apa
    5·1 answer
  • What is the exact volume of the cone 16ft 5ft.
    8·2 answers
  • Trigonometric ratios
    8·1 answer
  • Dominic earns $15 an hour working at a movie theater. last week he worked h hour at the concession stand and three times as many
    8·1 answer
  • Plssss helppppppp I need a least to greatest ​
    15·2 answers
  • Drawing a red marble from a bag, then replacing the red marble and drawing out a blue marble. This event is Independent.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!