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
seropon [69]
3 years ago
12

7x - 2 = 2y

Mathematics
1 answer:
ser-zykov [4K]3 years ago
6 0
\left\{\begin{array}{ccc}7x-2=2y\\3x=2y-1\end{array}\right\\\\substitution:\\\\3x=7x-2-1\\3x-7x=-3\\-4x=-3\ \ \ /:(-4)\\x=\frac{3}{4}\\\\2y=7\cdot\frac{3}{4}-2=\frac{21}{4}-2=\frac{21}{4}-\frac{8}{4}=\frac{13}{4}\\2y=\frac{13}{4}\ \ \ \ /:2\\y=\frac{13}{8}\\\\Answer:x=\frac{3}{4};\ y=\frac{13}{8}.
You might be interested in
On a flight from New York to London, an airplane travels at a constant speed. An equation relating the distance traveled in mile
Anettt [7]

Answer:

Step-by-step explanation:

The question is incomplete. Here is the complete question

On a flight New York to London an airplane travels at a constant speed. An equation relating the distance traveled in miles d to the number of hours flying t is t= 1/500d. How long will it take the airplane to travel 800 miles?

Speed is the change in distance if a body with respect to time. It is expressed mathematically according to the question as t = 1/500 × d

To determine the time it will take to travel 800miles, we will substitute d = 800 into the modeled equation.

t = 1/500 × 800

t = 800/500

t = 8/5

t = 1.6

6 0
3 years ago
What is 48 x 3/8 is equal to
Valentin [98]

Answer:

18

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Decimals from least to greatest please help put in order. 2.2, 2.15, 2.2012, 2.501
Ivan

Answer: 2.15, 2.2, 2.2012, 2.501

4 0
3 years ago
Read 2 more answers
For a particular event, 709 tickets were sold for a total of $1,780. If students paid $2 per ticket and non students paid $3 per
Alex73 [517]

Answer:

709

Step-by-step explanation:

7 0
3 years ago
Write in exponential form. 3a • 3a • 3a
o-na [289]
3a^3 is the answer

Hope that helps
5 0
3 years ago
Other questions:
  • Why is 4 the smallest composite number 
    5·1 answer
  • A laundry detergent box measures 12 inches by 8 inches by 2.5 inches. What is the volume of two boxes of detergent ?
    10·1 answer
  • CAN SOMEONE PLEASE JUST ANSWER THIS ASAP FOR BRAINLIEST!!!
    15·1 answer
  • Could I have an answer ASAP
    9·1 answer
  • Sofia is taking a multiple choice test with a total of 80 points available. Each question is worth exactly 4 points. What would
    14·1 answer
  • the ages of two students are in the ratio of 3:5,if the older is 40yrs. How old is the younger student​
    6·1 answer
  • Can i get an answer in 10 min?? 30 points on the line for whoever can help me out
    5·1 answer
  • Is 13 and 98 relatively prime
    8·2 answers
  • Please help me solve this
    15·2 answers
  • If two events (both with probability greater than 0) are mutually exclusive, then? a. they also must be independent. b. they als
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!