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
Lorico [155]
3 years ago
8

-3x+3y=3 -5x+y=13 Solve for substitution

Mathematics
1 answer:
vladimir1956 [14]3 years ago
8 0
Take -5x + y =13 and rearrange for y:
y=13+5x

Substitute into other equation for y:
-3x+3(13+5x)=3

Multiply out brackets:
-3x+39+15x=3

Simplify:
12x+39=3

Rearrange for x:
12x=-36
x=-3

Substitute back into y=13+5x:
y=13+5(-3)
y=13-15
y=-2

You might be interested in
What is the lcm lcm of 8,9 and 10​
vivado [14]

Answer:

360

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Solve for u.<br> - 4(w + 1) = -24
marta [7]
W=-21 Move the four over to the 24 leaving you with negative 20 and then “subtract” one
4 0
2 years ago
Read 2 more answers
#9. Solve: 8x + 5 = 3x + 15<br><br> X = 4<br> x = 2<br> x = 20/11<br> x = 20
Jobisdone [24]

Answer:

x = 2

Step-by-step explanation:

8x + 5 = 3x + 15

8x - 3x + 5 = 3x - 3x + 15

5x + 5 = 15

5x + 5 - 5 = 15 - 5

5x = 10

5x / 5 = 10 / 5

x = 2

6 0
2 years ago
For the geometric series given by 5 + 10 + 20+ . . . , which of the following statements is FALSE?
slava [35]

Answer:

All statements are true

Step-by-step explanation:

1. The statement S_{500}>S_{499} is true, because S_{499} is the sum of first 499 terms,  S_{500} is the sum of first 500 terms,  and all these terms are positive, then the sum of smaller number of terms is less than the sum of larger number of terms.

2. The statement S_{500}>a_{500} is true, because S_{500} is the sum of first 500 terms,  a_{500} is 500th term and the sum of 500 terms is greater than the 500th term.

3. The statement S_1=a_1 is true, because S_1 is the sum of first 1 term that is exactly  a_1.

All statements are true.

5 0
3 years ago
The average value of all the pennies, nickels, dimes, and quarters in Paula's purse is 20 cents. If she had one more quarter, th
sveta [45]

Answer:

Step-by-step explanation:

The average value of all the pennies, nickels, dimes, and quarters in Paula's purse is 20 cents. If she had one more quarter, the average value would be 21 cents. How many dimes does she have in her purse

7 0
1 year ago
Other questions:
  • Convert from $0.20 dollars to cents
    7·1 answer
  • Help a brother out!!! Math prom worth 20!! And explain please
    14·1 answer
  • An inchworm ran into a log while on his way to the raspberry patch. The diameter of the log is 32 cm. How far did the inchworm t
    8·2 answers
  • What are the solutions of the system?
    9·2 answers
  • Answer these please!!!!
    9·1 answer
  • Solve 5x - c = k for x
    8·1 answer
  • Pls someone pls help me with this question pls
    11·1 answer
  • (65+ ( 1/5 x 5) + 6) / 9
    11·1 answer
  • Please help!!!!!!!!!!
    6·2 answers
  • To find the height of a pole, a surveyor moves 150 feet away from the base of the pole and then, with a transit 4 feet tall, mea
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!