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
marysya [2.9K]
3 years ago
13

~~~ 30 POINTS ~~~

Mathematics
2 answers:
frez [133]3 years ago
5 0
Let x be the unknown number of all 3 equations
1.) 3x - 2 = x + 10 x=6
2.) x + 4 = 19 - 2x x=5
3.) 8x - 20 = x + 15 x=5
trasher [3.6K]3 years ago
3 0
<span>1)   3x-2=x+10


</span><span>Now, lets solve this step-by-step.
</span><span>
3x - 2 = x + 10
-x             -x
</span><span>
</span><span>3x - x = 2x                                2x - 2 = 10
</span><span>
</span><span>2x - 2 = 10
</span>2x - 2+2 = 10+2          The inverse operation helps isolate the variable. 
<span>
2x = 12

2x/2 = 12/2

x = 12/2
x = 6</span><span>

Answer: x = 6

2) x + 4 = 19 - 2x </span>

We can solve this much faster

x + 4 = 19 - 2x
                  +2x

x+2x = 3x

3x + 4 = 19
      -4     -4

19-4 = 15

3x= 15
3x/3 = 15/3
x= 5

Answer: x = 5

3) 
<span>8x - 20 = x + 15

Much faster now!!

8x - 20 = x + 15
               -x
8x-x = 7x

7x - 20 = 15
      +20   +20
15+20 = 35

7x = 35
7x/7 = 35/7
x = 35/7
x = 5

Answer: x= 5</span>
You might be interested in
Ok so what really is 9 10?
alina1380 [7]
I am guessing you meant 9+10 which is 19
3 0
3 years ago
Read 2 more answers
Plz help I need your help plz help me plz I swear I need your help plz help me plz I’m begging you on my 2 knees plz help me
REY [17]

Answer:

The correct answer is B

Step-by-step explanation:

First, the question said that the shoes were $15 less than double the price of his pants. In algebra 2p would mean 2 multiplied by p so we know that C and D are wrong. Now $15 less than 2p would mean you have to subtract by 15, so now we have 2p-15. Since we haven't added in the amount of money the pair of pants cost, we have to use addition to add it in, and that adds to the equation making the equation 2p - 15 + p. So, the answer is B.

6 0
3 years ago
If someone can help me out :D!
Nataliya [291]
Hello

Answer:

28.378

Explanation:

8 0
3 years ago
Read 2 more answers
Two less than the quotient of a number and 5
atroni [7]
N/5 - 2 is the answer 
4 0
3 years ago
Plz help this is past due
Ksivusya [100]

Answer:

-8

Step-by-step explanation:

if you sub in 8 as the value for y, you get

-4x - 8 = 24

add 8 on both sides to simplify

-4x = 32

divide both sides by -4

x = -8

3 0
2 years ago
Other questions:
  • The graphs of functions f(x) and g(x) = f(x) + k are shown below:
    15·2 answers
  • 1. Explain the rule to solve - 15 + 4. Then write you answer.
    14·1 answer
  • Can somebody solve this for me? thank you
    13·1 answer
  • Help ASAP please! Please explain it, thanks in advance!
    9·1 answer
  • Bruce buys 7 cans of food for his dog a week and a bag of dog food every 4 weeks .cans of dog food cost $1.29 each. a bag of dog
    11·1 answer
  • Based on the graph below, what is a reasonable estimate for the у value when x is 4?
    7·1 answer
  • A box contains four equal sized cards labeled 1,3,5,7 Tim will select one card from the box What is the probability that Tim wil
    10·1 answer
  • Answer this in the next 4 minutes and you can earn the BRAINLIEST answer!!! Please answer ASAP. Thanks in advance! :D
    5·1 answer
  • Round 136 to the nearest ten.
    5·2 answers
  • Help me please!!!!!!!
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!