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
Marizza181 [45]
3 years ago
12

How do you solve this problem using substitution or elimination?

Mathematics
1 answer:
saw5 [17]3 years ago
6 0
3x=4y
x+y=21

x = 21-y
3(21-y)=4y

63-3y=4y
63=7y
y=9

x+y=21
x+9=21
x=12

answer is (12, 9)

You might be interested in
A number cube is rolled, and a coin is tossed. What is the probability that a four is rolled and the coins comes up tails?
KonstantinChe [14]
The answer is D 1/12.

3 0
3 years ago
Given that pentagon ABCDE ≅ pentagon FGHIJ, find the value of m.
I am Lyosha [343]
Thank you for posting your question here at brainly. Feel free to ask more questions.   <span><span>The best and most correct answer among the choices provided by the question is  </span>A. 2 .</span>       <span><span>

</span><span>Hope my answer would be a great help for you. </span> </span>  

<span> </span>

7 0
3 years ago
What is the slope of the line shown below?<br><br> (4,8)<br> (2, 4)
OLEGan [10]

Answer: The slope of the line is 2.

Step-by-step explanation:

Slope = change in y/change in x

Slope = (8-4)/(4-2)

Slope = (4)/(2)

Slope = 2

4 0
2 years ago
Read 2 more answers
Please help with angle addition
KonstantinChe [14]

Answer:

m∠1 = 89°

Step-by-step explanation:

     Since m∠2 is a part of ∠GFH, he can do the following.

∠GFH - m∠2 = m∠1

133° - 44° = 89°

4 0
2 years ago
Prove that two non-zero vectors are collinear if and only if one vector is a scalar multiple of the other.
erastovalidia [21]

The Prove that two non-zero vectors are collinear if and only if one vector is a scalar multiple of the other is given below.

<h3>What are the proves?</h3>

1.  To know  collinear vectors:

∧ ⁻a ║ ⁻a

If  ⁻b = ∧ ⁻a

then |⁻b| = |∧ ⁻a|

So one can say that  line ⁻b and ⁻a are  collinear.

2.  If ⁻a and ⁻b  are collinear

Assuming |b| length  is  'μ' times of |⁻a |

Then | 'μ' ⁻a| = | 'μ' ⁻a|

So  ⁻b = 'μ' ⁻a

Learn more about vectors  from

brainly.com/question/25705666

#SPJ1

3 0
2 years ago
Other questions:
  • a tree struck by lightning broke at a point 12 ft above the ground. what was the height of the tree to the nearest tenth of a fo
    9·1 answer
  • Can someone help me please
    7·2 answers
  • The city council hired three college interns to measure public support for a large parks and recreation initiative in their city
    5·1 answer
  • How do you find the distance of two points on a graph
    8·2 answers
  • Select all of the terms that are "like."<br> xy2<br> 2xy<br> x2<br> -xy<br> 2x2y<br> xy
    13·2 answers
  • Select the symbol that represents the phrase "no more than."<br><br> &lt;<br> &gt;<br> ≤<br> ≥
    12·1 answer
  • The party planner wants to know how many smaller table lengths, 2.5x-3, and widths, x, should be considered in expressing the pe
    13·1 answer
  • Evan made a tower from 32 building blocks. Aisha made a tower using 5 times as many blocks. How many blocks did Aisha use to mak
    8·1 answer
  • Okay someone please help me and show you work i need it asap
    7·1 answer
  • 13. Solve the system of equation using substitution.<br> 5x – 2y = 33<br> y = 7x – 39
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!