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
Alex777 [14]
2 years ago
6

3(b + 5) = 4(2b - 5)

Mathematics
2 answers:
hichkok12 [17]2 years ago
8 0

Answer:

b= 7

Step-by-step explanation:

3b +15 = 8b -20

-8b

-5b = -35

/-5

b= 7

nikklg [1K]2 years ago
6 0

Answer:

b = 7

Step-by-step explanation:

3 ( b + 5 ) = 4 ( 2b - 5 )

The first thing to do is to distribute, using the distributive property.

3 ( b + 5 ) = 4 ( 2b - 5 )

3b + 15 = 8b - 20

whichever side has the highest x value subtract or add the common numeral from.

3b + 15 = 8b - 20

+ 20 + 20

3b + 35 = 8b

then subtract or add the smaller value of x.

3b + 35 = 8b

- 3b - 3b

35 = 5b

Then we divide both sides by the number next to the variable

5b / 5

35 / 5

Now you have the final solution using those numbers

b = 7

You might be interested in
What is the missing number?
ss7ja [257]

Answer:

20 ?

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Expand and simplify 5(y-2) 2(y-3)
Oksana_A [137]
5y-10 and 2y-6 unless the two are together in which case are they being added or multiplied (the equations).

4 0
3 years ago
salma purchased a prepaid phone card for $20. long distance calls cost 24 cents a minute using this card. salma used her card on
suter [353]
We can set up an equation to solve this problem, but first we need to write out what we know.

$20 overall
$0.24 every minute
$13.52 remaining on the card

Now that we know our information, we can set it up in an equation. 

20 - 0.24x = 13.52

The 20 represents $20 overall when she first got the phone card.
We are then subtracting $20 from how must it costs a minute (which is 24 cents). The 'x' indicates the number we are trying to find (how many minutes her call lasted). Lastly, 13.52 is the result of everything, since she has $13.52 remaining on the card.

We can now solve the equation:

20 - 0.24x = 13.52
-0.24x = 13.52 - 20 /// subtract 20 from each side
-0.24x = -6.48 /// simplify
x = 27 /// divide each side by -0.24

Our solution is: x = 27.

-----

An easier way to solve this problem would be to first, subtract the total amount of money she had on the card when she first got it, and then the remaining total she ended up with.

$20 - $13.52 = $6.48

So, she spent a total of $6.48 on long distance calls, but since we are looking for how many minutes, we need to divide the total she spent and how much it costs per minute.

6.48 ÷ 24 = 27

We receive the same amount of minutes spent just like we did the last way we solved.

-----

Salma spent 27 minutes on the phone. 
3 0
3 years ago
I need help anyone will do I need help quick
sveta [45]
8 and 0

Hopefully this helps you
3 0
3 years ago
Read 2 more answers
Hank buys a used car for $8,900 and plans to sell it on his used car lot. What is the price of the car after a markup of 12%? Ro
PSYCHO15rus [73]

Answer:

$9,968 would be the new price

6 0
2 years ago
Read 2 more answers
Other questions:
  • a refigerator was sold $890. this price included a 30% mark-up on the cost price. calculate the cost price
    6·2 answers
  • URGENT DUE TODAY!!! PLEASE HELP!!! i will give brainliest
    8·1 answer
  • Solve for x <br> 3x - 2 (x - 4) = 5 (2x + 1 )
    12·2 answers
  • Amy has $800 saved but withdraws $80 per week for gas and groceries​
    13·1 answer
  • Can some help with this and maybe explain​
    10·1 answer
  • A circle has an area of 706.5 square inches. What is the diameter, in inches, of the circle?
    10·1 answer
  • PICTURE HELPPP!!!!! <br><br> Please please please
    10·1 answer
  • 8( -4 - 9h) I REALLY REALLY REALLY NEED HELP PLEASE HELP
    5·2 answers
  • What would the monthly payment be for a $5,000 loan with a 6. 25% interest rate compounded monthly spread over 60 months? a. $25
    11·1 answer
  • Identify a rational number among the following numbers :<br> 2 + √2, 2√2, 0 and π
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!