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3 years ago

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)

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3 years ago

SHORT RESPONSE Two angles of a triangle have measures of 35° and 80°. Find the values of the exterior angle measures of the tria

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Answer:

Step-by-step explanation:

Before giving the exterior angles, find the third angle. A triangle (all triangles) measure 180 degrees.

35 + 80 + x = 180

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3 years ago

The table below shows the numbers of tickets sold at a movie theater on Friday.

prisoha [69]

Answer:

Number of Adult's tickets sold on Saturday = 3,356

Number of Children's tickets sold on Saturday = 2, 928

Total number of tickets sold over these two days is 8,938.

Step-by-step explanation:

Here, the number of tickets sold on FRIDAY:

Adult Ticket sold = 1,678

Children's Tickets sold = 976

So, the total number of tickets sold on Friday

= Sum of ( Adult + Children's ) tickets = 1,678 + 976 = 2,654 .... (1)

The number of tickets sold on SATURDAY:

Adult Ticket sold = 2 times the number of adult tickets sold on Friday

= 1,678 x 2 = 3,356

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So, the total number of tickets sold on Saturday

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6 0

3 years ago

What is the solution of |x- 5|-2=10?

Lelu [443]

Answer:

x=17, x=-7

Step-by-step explanation:

Step 1 :

Rearrange this Absolute Value Equation

Absolute value equalitiy entered

|x-5|-2 = 10

Another term is moved / added to the right hand side.

|x-5| = 12

Step 2 :

Clear the Absolute Value Bars

Clear the absolute-value bars by splitting the equation into its two cases, one for the Positive case and the other for the Negative case.

The Absolute Value term is |x-5|

For the Negative case we'll use -(x-5)

For the Positive case we'll use (x-5)

Step 3 :

Solve the Negative Case

-(x-5) = 12

Multiply

-x+5 = 12

Rearrange and Add up

-x = 7

Multiply both sides by (-1)

x = -7

Which is the solution for the Negative Case

Step 4 :

Solve the Positive Case

(x-5) = 12

Rearrange and Add up

x = 17

Which is the solution for the Positive Case

Step 5 :

Wrap up the solution

x=-7

x=17

8 0

3 years ago

Read 2 more answers

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3 years ago

Solve 7r+ 2 = 5(r – 4) ​

Solve 7r+ 2 = 5(r – 4)