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
Alchen [17]
3 years ago
13

Solve the system of linear equations by substitution. x-2y=6 3x-5y=11

Mathematics
1 answer:
myrzilka [38]3 years ago
4 0

Answer:

x = -8, y = -7

Step-by-step explanation:

=> x = 6 + 2y

substitute x = 6 + 2y into the equation 3x - 5y = 11 to solve for y:

=> 3(6 + 2y) - 5y = 11

=> 18 + 6y -5y = 11

=> y = -7

substitute y = -7 into the equation x - 2y = 6 to solve for x:

=> x - 2(-7) = 6

=> x +14 = 6

=> x = -8

You might be interested in
Help me please!!!!! I need help with angles
Salsk061 [2.6K]

Answer:

<CFE = 28

<RPQ = 53

Step-by-step explanation:

1)

<CFE + 152 = 180

<CFE = 180 - 152

<CFE = 28

2)

Complementary means the angles add up to 90 so:

<RPQ + 37 = 90

<RPQ = 90 - 37

<RPQ = 53

4 0
3 years ago
There are 70 billion people in the world how many people die everyday
Free_Kalibri [48]
You know someone is just going to look it up? so save yourself the time and pts and look it up yourself. and the answer is <span>151,600</span>
5 0
4 years ago
Read 2 more answers
Solve for x. 21/2x−3/4(2x+5)=3/8
Savatey [412]
Simplify \frac{21}{2}x
​2
​
​21
​​ x to \frac{21x}{2}
​2
​
​21x
​​
\frac{21x}{2}-\frac{3}{4}(2x+5)=\frac{3}{8}
​2
​
​21x
​​ −
​4
​
​3
​​ (2x+5)=
​8
​
​3
​​

2 Simplify \frac{3}{4}(2x+5)
​4
​
​3
​​ (2x+5) to \frac{3(2x+5)}{4}
​4
​
​3(2x+5)
​​
\frac{21x}{2}-\frac{3(2x+5)}{4}=\frac{3}{8}
​2
​
​21x
​​ −
​4
​
​3(2x+5)
​​ =
​8
​
​3
​​

3 Multiply both sides by 44 (the LCM of 2, 42,4)
42x-3(2x+5)=\frac{3}{2}42x−3(2x+5)=
​2
​
​3
​​

4 Expand
42x-6x-15=\frac{3}{2}42x−6x−15=
​2
​
​3
​​

5 Simplify 42x-6x-1542x−6x−15 to 36x-1536x−15
36x-15=\frac{3}{2}36x−15=
​2
​
​3
​​

6 Add 1515 to both sides
36x=\frac{3}{2}+1536x=
​2
​
​3
​​ +15

7 Simplify \frac{3}{2}+15
​2
​
​3
​​ +15 to \frac{33}{2}
​2
​
​33
​​
36x=\frac{33}{2}36x=
​2
​
​33
​​

8 Divide both sides by 3636
x=\frac{\frac{33}{2}}{36}x=
​36
​
​
​2
​
​33
​​
​​

9 Simplify \frac{\frac{33}{2}}{36}
​36
​
​
​2
​
​33
​​
​​ to \frac{33}{2\times 36}
​2×36
​
​33
​​
x=\frac{33}{2\times 36}x=
​2×36
​
​33
​​

10 Simplify 2\times 362×36 to 7272
x=\frac{33}{72}x=
​72
​
​33
​​

11 Simplify \frac{33}{72}
​72
​
​33
​​ to \frac{11}{24}
​24
​
​11
​​
x=\frac{11}{24}x=
​24
​
​11
​​
X=11 over 24
4 0
3 years ago
Read 2 more answers
D) change decimal to a fraction 0.078125.​
Y_Kistochka [10]

pls follow me

Step-by-step explanation:

not sure but I think the answer is 5/64

8 0
3 years ago
Read 2 more answers
A store sells 12 cans of nuts for $30 how much would it cost you to buy seven cans of nuts
Stells [14]

Answer: $17.50

Step-by-step explanation:

30 divided by 12 equals 2.5 therefor you would multiply 2.5 by the number of cans purchased, in this case 7.

3 0
2 years ago
Read 2 more answers
Other questions:
  • What is the solution of the linear-quadratic system of equations?<br><br> {y=x^2+5x−3<br> {y-x=2
    12·1 answer
  • Help!!!!!! Please!!! :((((((((
    6·2 answers
  • A publishing industry report predicts that magazine subscriptions will drop by 10% each year. If this prediction is correct, the
    7·1 answer
  • Can somebody help me? im really stuck
    6·2 answers
  • If 3x-1=11,what is the value of x^2+x
    14·1 answer
  • Scott works as a delivery person for a shipping company. The graph shows a linear model for his delivery times on different days
    6·1 answer
  • The purpose of a budget is to:
    5·1 answer
  • 1.Which of the following is NOT a true statement?
    8·1 answer
  • Write an equivalent expression.
    9·1 answer
  • The first and second terms of an arithmetic sequence are 50 and 100, respectively.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!