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
disa [49]
3 years ago
14

5x+4y=20.14 6x+7y=28.15

Mathematics
1 answer:
ohaa [14]3 years ago
4 0

Answer:

x=2.2582, y=19.91/9. (2.2582, 19.91/9).

Step-by-step explanation:

5x+4y=20.14

6x+7y=28.15

-------------------

6(5x+4y)=6(20.14)

-5(6x+7y)=-5(28.15)

------------------------------

30x+24y=120.84

-30x-35y=-140.75

--------------------------

-9y=-19.91

9y=19.91

y=19.91/9

5x+4(19.91/9)=20.14

5x+79.64/9=20.14

5x=20.14-79.64/9

5x=11.291

x=11.291/5

x=2.2582

You might be interested in
If the population changes by 2.5% per year, what percentage does it change in 5 years
konstantin123 [22]

The population changes to 12.5% in 5 years.

3 0
3 years ago
Please help w this math!!
umka2103 [35]

Answer:

18.25-2=16.25

16.25÷5=3.25

answer=3.25

5 0
3 years ago
Read 2 more answers
What's the difference between 126 1/4 and 78 2/3
anygoal [31]
126 1/4 - 78 2/3 = ?
turn into mixed fractions
504/4 - 236/3 =?
find the least common denominator
1512/12 - 944/12 = ?
subtract
568/12
turn into improper fraction
47 1/3

The difference <span>between 126 1/4 and 78 2/3 is 47 1/3</span>
5 0
3 years ago
What is the value of 2 b + 24 equals 30​
madam [21]
The answer is b = 3. you subtract 24 from bothe sides and then divide by 2.
5 0
4 years ago
Read 2 more answers
Evaluate g(10)=-3x+1
Ann [662]

Answer:

-29

Step-by-step explanation:

-3(10)+1

-30+1

-29

3 0
4 years ago
Other questions:
  • Kennedy saves 5.50 for each hour she works. She needs to save and hurricaneadditional $44 to buy an E-reader. How many more hour
    7·1 answer
  • How to add it because I don not know how to do it
    7·2 answers
  • What does y^5 x y^2 equal?
    10·2 answers
  • The table shows children’s ages and the number of servings of vegetables the children ate each week.
    14·1 answer
  • In the neighborhood park there is a circular grassy picnic area, but half of the grass has died. The city wants to replant the g
    7·1 answer
  • Write the general form of equation (x-8)^2 +(y+2)^2 =1
    14·1 answer
  • Write in terms of i.<br> Simplify your answer as much as possible.<br> √−32
    9·1 answer
  • Where does –2 ¾ go on this number line?
    7·1 answer
  • A bin contains 25 light bulbs, 5 of which are in good condition and will function for at least 30 days, 10 of which are partiall
    6·1 answer
  • Write <br> 15<br> 9<br> as a mixed number. <br> Give your answer in its simplest form.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!