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
miv72 [106K]
3 years ago
11

Me ayudan con esa ecuacion por sustitucion con la comprobacion pliss

Mathematics
1 answer:
attashe74 [19]3 years ago
8 0
<span>1/2x+3y/4=5 => (1/2)x + (3/4)y = 5

1/5x+3y/2=2  => (1/5)x + (3/2)y = 2

Eliminate the fractional coefficients:  Mult. the first equation by 4 and mult. the second equation by 10:


2x + 15y = 20     

</span><span>Multiply the 1st equation by -1:

-</span>2x - 3y = -20
2x + 15y = 20 
-------------------
       12y = 0, so y = 0.  Then the first equation becomes  2x + 3(0) = 20, or
                                     x=10.

Solution is (10,0).
You might be interested in
Which is the volume of this cone (use 3.14 for , and round to the nearest hundredth)?
tensa zangetsu [6.8K]

Answer:

B. 19.17 cubic centimeters

3 0
3 years ago
Read 2 more answers
Megan started biking to the internet cafe traveling 9 mph, after some time the bike got a flat so Megan walked the rest of the w
Bess [88]

Answer:

Megan travelled at 9mph for 6 hours and 7mph for 3 hours

Step-by-step explanation:

Speed = distance / time

Speed*time = distance

Assuming that Megan travelled x hours at 9mph

(9*x) + (7*(9-x)) = 75

x = 6 hours

So Megan travelled at 9mph for 6 hours and 7mph for 3 hours

5 0
3 years ago
Read 2 more answers
James swam 3 and 1/3 miles. For 2/6 of his swim he did the backstroke. How many miles did he swim the backstroke?
aksik [14]

Answer:i believe thats only a third of a mile


Step-by-step explanation:

if you have the both take on the same denominator the 3 miles would be 3/3 and then it would be 6/6 and the 1/3 mile would become 2/6 hope i helped

5 0
3 years ago
Read 2 more answers
Nia has $19.50 to ride the subway around New York. It will cost her $0.75 every time she rides. Identify the dependent variable
Firlakuza [10]

Answer:

Independent variable- subway cost

dependent variable- nias money ($19.50)

Step-by-step explanation:

3 0
3 years ago
Is x-10 a factor of f(x)=5x^3+60x^2+109x+90
RUDIKE [14]

Answer:

No

Step-by-step explanation:

Given values are

f(x) = 5x^3+60x^2+109x+90

x = -10.

Given Polynomial is 5x^3+60x^2+109x+90 .

= (90)+(5.x^3)+(60.x^2)+(109.x)

By putting x = (-10) we can rewrite it as

= (90)+(5.(-10)^3)+(60.(-10)^2)+(109.(-10))

= (90)+(-5000)+(6000)+(-1090)

= 0

The remainder of given polynomial is 0.

4 0
3 years ago
Other questions:
  • -
    8·1 answer
  • Determine if the statement is always, sometimes, or never true:
    13·2 answers
  • Martha has 15 feet of a red ribbon and 12 feet of a green ribbon. How many yards does she have altogether
    12·1 answer
  • a boy flies a kite with 100 foot long string. the angle of elevation of the string is 48. how high is the kite from the ground.
    10·1 answer
  • What is the length of AB if A and B have coordinates of A (-3,7) and B (7,3)​
    6·1 answer
  • In a 30-60-90 right triangle, the side opposite the 30- degree angle is?
    9·2 answers
  • Point JJJ is located at (-4, 4)(−4,4)left parenthesis, minus, 4, comma, 4, right parenthesis. Select all of the following that a
    12·1 answer
  • If A = {1, 3, 5, 15}, B = {2, 3, 5, 7}, C = {2, 4, 6, 8} Then what is (A U B) ∩ C?
    15·1 answer
  • Solve the following expression when<br> t = 6 and d = 8<br> t + d = 8 - 6
    12·1 answer
  • Will give Brainliest. Hannah does push-ups in sets of 3. She did 10 sets of pushups today. Then her coach asked her to do 15 mor
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!