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
GarryVolchara [31]
3 years ago
12

3х — 7y = 21

Mathematics
1 answer:
Zolol [24]3 years ago
7 0
Answer:

Explanation:

3x - 7y = 21

6x = 14y + 42
Or 6x - 14y = 42

3x - 7y = 21 (1)
6x - 14y = 42 (2)
———————
-2(3x - 7y = 21)
6x - 14y = 42
———————
-6x + 14y = -42
6x - 14y = 42
———————
0x + 0y = 0

So I think in this case x and y has infinitely many solution
You might be interested in
What is a negative 3 cubed written as a fraction
Advocard [28]
When you have an exponent that is negative, it means to take reciprocal of the fraction then take it the power.

Some examples:

5^-2 = 1/5^2 = 1/25
10^-3 = 1/10^-3 = 1/1000

If this answer wasn't clear enough, just comment below or DM me a message!

8 0
3 years ago
Read 2 more answers
Find a formula for an arithmetic sequence that begins 45, 40, 35, 30, ...
-BARSIC- [3]

Answer:

C) 9n=45-5(n-5)....…...….......

8 0
3 years ago
Nathan has four brown teddy bears, 5 pink teddy bears and 3 red teddy bears in his shop. Two teddy bears are bought, one at a ti
Dahasolnce [82]

Answer:

2

Step-by-step explanation:

4 0
3 years ago
Roger brought some sponges. The number of packages he bought was 14 less than the number of sponges per package. Roger bought 51
mihalych1998 [28]

Answer:

the number of sponges per package bought be 32.5

Step-by-step explanation:

Let us assume the number of sponges per package be x

So the number of packages he bought be x - 14

And, the overall he bought 51 sponges

So

the number of packages of sponges did roger buy is

x + x - 14 = 51

2x = 51 + 14

2x = 65

x = 32.5

So the number of sponges per package bought be 32.5

8 0
3 years ago
I’ll mark brainlist
Vinvika [58]

Answer:

m=-4

Step-by-step explanation:

M-9=-13

   +9   +9

M=-4

Hope it helps :)

6 0
3 years ago
Read 2 more answers
Other questions:
  • Please answer QUestion <br><br> L
    5·1 answer
  • What is the function rule for the line?
    7·1 answer
  • Is 0.7 greater than 0.75 or less than 0.25
    15·1 answer
  • Put in order from least to greatest 144, 264, 198, .131252
    13·1 answer
  • Half-life formula: A = A0(0.5) t/h
    8·2 answers
  • What two numbers multiply to give you 6 and add up to give you negative 7
    15·1 answer
  • The daily dinner bills in a local restaurant are normally distributed with a mean of $28 and a standard deviation of $6. What is
    8·1 answer
  • What is the approximate area of the shaded sector in the circle shown below? O A. 25 in2 4.3 in 155 B. 5.82 in2 IC O C. 11.63 in
    15·1 answer
  • I need help with this question quickly TvT​
    8·1 answer
  • Need help with angles could someone help I’ll give you brainlest
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!