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
yan [13]
2 years ago
7

Solve system by elimination -9x - y =-19 5x + y = 15

Mathematics
1 answer:
vredina [299]2 years ago
6 0

Answer:

(1, 10 )

Step-by-step explanation:

Given the 2 equations

- 9x - y = - 19 → (1)

5x + y = 15 → (2)

Adding the 2 equations term by term will eliminate the y- term

- 4x + 0 = - 4

- 4x = - 4 ( divide both sides by - 4 )

x = 1

Substitute x = 1 into either of the 2 equations and solve for y

Substituting into (2)

5(1) + y = 15

5 + y = 15 ( subtract 5 from both sides )

y = 10

solution is (1, 10 )

You might be interested in
Pls help immediately
STatiana [176]

Answer:

(3,2)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
In a school 40% are boys and 900 are girls. find the total number of students of the school and the number of boys
My name is Ann [436]

Answer:

1500 students

600 boys

Step-by-step explanation:

40% are boys, so 60% are girls.

Writing a proportion:

900 / 60% = x / 100%

x = 1500

There are 1500 students in the school, which means there are 600 boys in the school.

6 0
3 years ago
A cube has a volume of 1331 cm3. What is the area of one of its faces.
Vinvika [58]
Area = 726 cm squared
3 0
3 years ago
What theorem or postulate can be used to justify that the two triangle are congruent? Write the congruence statement
n200080 [17]

B. ASA

FGH = IHG


Please correct me if I'm wrong!! :)

6 0
3 years ago
A cone has a radius of 4 units and a height of 6 units.
Usimov [2.4K]
We know, Volume of a Cylinder = πr² h/3
v = 3.14 * 4² * 6/3
v = 3.14 * 16 * 2
v = 100.48 

In short, Your Answer would be Option B

Hope this helps!
7 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the equation sin x + cos x=cos 2x for 0 27. x
    15·1 answer
  • What is the sign of addend with greater absolute value
    12·2 answers
  • 19. Suppose 3 marbles are drawn without replacement from a bag containing 3 yellow and 4 white marbles. (a) Draw a histogram for
    15·1 answer
  • a book normally costs $21.50. today it was on sale for 15.05. what percentage discount was offered during the sale?
    13·1 answer
  • Prove that if BA=I then BA=AB.
    10·1 answer
  • Grandma says Baby Bertha (BB) should get $1000 at birth plus $50 per year. Grandpa disagrees; he thinks BB should get $1000 at b
    14·1 answer
  • Please help, thanks!<br><br> Factor completely<br><br> Sx²- 13x² + 15x²
    8·1 answer
  • How many boxes of fish can fit in the shipping box? Explain your answer, will give brainlest!
    8·1 answer
  • Helpppppp poooorrrfavooor plsssssss
    8·2 answers
  • Which situation can be represented by the equation 4d + 5 = 29?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!