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
Firlakuza [10]
3 years ago
7

To eliminate the terms and solve for y in the fewest steps, by which constants should the equations be multiplied by before addi

ng the equations together? First equation: 9x + 3y = -18 Second equation: 8x + 7y = 10 The first equation should be multiplied by 3 and the second equation by 7. The first equation should be multiplied by -3 and the second equation by -7. The first equation should be multiplied by - 7 and the second equation by 3 . The first equation should be multiplied by -7 and the second equation by -3.
Mathematics
2 answers:
icang [17]3 years ago
7 0

Answer:

C. The first equation should be multiplied by - 7 and the second equation by 3

Step-by-step explanation:

Alex17521 [72]3 years ago
6 0

Answer:

The first equation should be multiplied by - 7 and the second equation by 3

Step-by-step explanation:

Indeed, let s multiply the first equation by -7

-7*9x-7*3y=7*18

and the second one by 3

3*8x+3*7y=3*10

when we add both the terms in y will be -7*3y+3*7y= 0

and then we can solve on x

hope this helps

You might be interested in
What quantity of a 30% solution do you need to make 150 mL of a 20% solution?
Bumek [7]

Answer:

Volume required = 100mL

Step-by-step explanation:

Let the volume of 30% solution required be = V mL

Amount of solute in V mL of solution = 30% of V = 0.3V...............(i)

This amount is also present in 150 mL of 20% solution

For 150 mL of 20% solution we have amount of solute = 150 mL X 20%

                                                                                          = 30..............(ii)

Thus equating i and ii we get

0.3V = 30

Thus V =100 mL

7 0
3 years ago
1. Question: What is the number of the parking space covered by the car?
GalinKa [24]

Answer: the number of the parking space covered by the car is 87

Step-by-step explanation:

Numbers are assigned to each parking spot. Looking closely at the numbers assigned to each spot, the numbers are inverted and the number on each successive spot differ by one. The numbers are 86, 87, 88, 89, 90, 91

Therefore, the number assigned to the spot where the car would be 87

4 0
3 years ago
Photo above <br><br>please answer
alina1380 [7]
I THINK the answer would be around 2/3/4 paper clips, I'm not sure. And keep in mind, I;m not responsible for any wrong answers/ invalid responses.
5 0
3 years ago
Help please. this is area and the shaded region.
nalin [4]

put the varible on the shaded half

3 0
3 years ago
Read 2 more answers
Please help due in 5 minutes !
SpyIntel [72]
The first option is correct
4 0
3 years ago
Read 2 more answers
Other questions:
  • A school contains 357 boys and 323 girls.
    13·1 answer
  • Find the length of the leg. If your answer is not an integer, leave it in simplest radical form. answer asap pls
    10·2 answers
  • A wheel has a radius of 5 ft what is the minimum number of complete revolutions that the wheel must make it to roll at least a 1
    10·2 answers
  • Help,..............................
    14·1 answer
  • A train is traveling at a speed of 80 km/h when the conductor applies the brakes. The train slows with a constant acceleration o
    6·1 answer
  • I need help finding the answer
    14·2 answers
  • Which is greater 6km or54,000 mm
    11·2 answers
  • If you see the picture please help
    7·2 answers
  • Could you sub to me to help me out? It’s Vizion Ryze. I have 137 subs right now.
    8·1 answer
  • Megan is placing fifteen 1-foot by 1-foot stepping stones in her garden. The garden is 10 feet wide and 15 feet long.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!