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
Evgesh-ka [11]
2 years ago
5

Use this system of equations to answer the questions

Mathematics
2 answers:
poizon [28]2 years ago
7 0

Answer:

the first one is 2 the second one is 3

Step-by-step explanation:

Over [174]2 years ago
6 0

Answer:

1. To eliminate x-term, multiply the second by -2

2. To eliminate y-term, multiply the second by 3

Step-by-step explanation:

4x - 9y = 7 (1)

-2x + 3y = 4 (2)

1. To eliminate x-term, multiply the second by -2

-2x + 3y = 4 (2) × 2

-4x + 6y = 8 (3)

4x - 9y = 7 (1)

Add (3) and (1)

6y - 9y = 8 + 7

-3y = 15

y = 15/-3

y = -5

4x - 9y = 7 (1)

4x - 9(-5) = 7

4x + 45 = 7

4x = 7 - 45

4x = -38

x = -38/4

x = -9.5

4x - 9y = 7 (1)

-2x + 3y = 4 (2)

2. To eliminate y-term, multiply the second by 3

-2x + 3y = 4 (2) × 3

-6x + 9y = 12 (3)

4x - 9y = 7 (1)

-6x + 4x = 12 + 7

-2x = 19

x = 19/-2

x = -9.5

4x - 9y = 7 (1)

4(-9.5) - 9y = 7

-38 - 9y = 7

-38 - 7 = 9y

-45 = 9y

y = -45/9

y = -5

You might be interested in
Can ya help me out ?? Thanks
ArbitrLikvidat [17]

Answer:

n=1

can you also please mark me as brainliest?

thanks!

5 0
3 years ago
Solve for w.<br> 69=5w – 16<br> Simplify your answer as much as possible.
7nadin3 [17]
W=17 im too good at math to be wrong about this
3 0
3 years ago
Read 2 more answers
Annette bought 3 notebooks for $0.80 each and a pack of pens for $1.20. She gave the clerk some money and got back
kirill [66]
3(.80)+1.20= 3.60

3.60+1.40= 5

Annette gave the clerk $5
3 0
3 years ago
F (x) =2x -4; find f (-4)
NemiM [27]

Answer:

f(-4) = -12

Step-by-step explanation:

f(x)=2x-4

To calculate f(-4), we need to substitute x in our equation above with -4:

f(x)=2x-4\\f(-4) = 2*(-4) - 4\\f(-4) = -8-4 = -12

Note that 2*(-4) = -8

Answer: f(-4) = -12

6 0
3 years ago
I trying to simplify ( 14+5) +15÷2 PLEASE HELP this is a 5th grade math question
sertanlavr [38]

Answer:

14+5 = 19

19 + 15/2

15/2 = 7.5

19+7.5 = 26.5


Just remember PEMDAS!

Pls mark brainliest

Step-by-step explanation:


6 0
3 years ago
Other questions:
  • What is the inverse of the function f(x)=2x+1
    5·2 answers
  • Find ( f . g) (x) where f(x) = 1/x^2 + 3 and g (x) = sqrt x-2
    10·1 answer
  • Roy driving 582 miles to family reunions she will drive 300 miles by herself the first day the second day Roy and her cousin wil
    11·1 answer
  • I really need help fast please
    15·2 answers
  • Describe the shape of the graph f(x)=x​
    11·1 answer
  • Enter the solution to the inequality in the box.<br><br><br><br> −10x−4≥−4(x−2)
    13·2 answers
  • Fond the value of x.
    15·2 answers
  • 8.4 × 10^31 write in expanded form how many 0’s are there
    10·1 answer
  • Which function has the range (-infinity,-2]U[0,infinity)?
    14·2 answers
  • For this test remember all questions have two answers. Please put the smaller answer in the first blank. Solve t2=144 .
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!