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
RSB [31]
3 years ago
6

Solve the system using elimination 6x-3y=15 and 7x+4y=10

Mathematics
1 answer:
Oxana [17]3 years ago
8 0
6x - 3y = 15.....multiply by 4
7x + 4y = 10....multiply by 3
---------------
24x - 12y = 60 (result of multiplying by 4)
21x + 12y = 30 (result of multiplying by 3)
---------------add
45x = 90
x = 90/45
x = 2

6x - 3y = 15
6(2) - 3y = 15
12 - 3y = 15
-3y = 15 - 12
-3y = 3
y = -3/3
y = -1

solution is (2,-1) <==
You might be interested in
Me ayuden por favor es para Hoy ✌✌​
DIA [1.3K]

ninguna de las preguntas se puede dividir, pero puede simplificar la última.

Lo siento pero, Espero que esto sea de ayuda!

8 0
3 years ago
50 POINTS !!<br><br><br> PLEASE HELP !! ILL GIVE BRAINLIEST TO THE RIGHT ANSWERS.
Sliva [168]

Answer:

80

Step-by-step explanation:

18^2 + 80^2 = 82

324 + 160 = c^2

4 0
3 years ago
Read 2 more answers
How do i Write in Digits the fifty five hundredths​
grandymaker [24]

fifty five hundredths is equal to 0.55

6 0
2 years ago
Read 2 more answers
3. Solve 2log4y - log4 (5y - 12) = 1/2<br>​
Ilia_Sergeevich [38]

Answer:

y =  4  or y = 6

Step-by-step explanation:

2log4y - log4 (5y - 12) = 1/2

​2log_4(y) - log_4(5y-12) = log_4(2)           apply law of logarithms

log_4(y^2) + log_4(1/(5y-12)) = log_4(/2)    apply law of logarithms

log_4(y^2/(5y-12)) = log_4(2)                     remove logarithm

y^2/(5y-12) = 2                                            cross multiply

y^2 = 10y-24                                                  rearrange and factor

y^2 - 10y + 24 = 0

(y-4)(y-6) = 0

y= 4 or y=6

4 0
3 years ago
Plz answer.............
spayn [35]

Answer:

( - x, - y )

Step-by-step explanation:

The starting is always Quadrant I.

270 degrees clockwise from Quadrant I is Quadrant III.

In Quadrant III, the points will be in the form ( - x, - y ).

7 0
3 years ago
Other questions:
  • Solve: x + 3 = -x + 7 (5 points)
    7·2 answers
  • Napkins came in a box of 500.How many people could use 3 napkins each?How many more would be needed for another person?
    15·1 answer
  • What is the distance between -4.5 and 3.5
    15·2 answers
  • (−3.5x+7)−(5.3x−4) plz help
    5·1 answer
  • What two numbers add up to 10 and multiply to 21
    10·1 answer
  • Dr. Anderson found that 18 out of 30 children in the village tested positive for chicken pox. At this rate, how many would test
    9·1 answer
  • Claire purchases a new dress for the prom. The dress is priced $160, but it is on sale for 30% off. Claire’s aunt works at the s
    14·1 answer
  • Which graph can be defined by the function<br> y=-3x + 2?
    7·2 answers
  • What is 3.8 x 10^-4 in standard notation?<br><br> Please help me! Thanks!
    9·2 answers
  • Help me the question 1 in my picture
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!