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
MrMuchimi
2 years ago
10

Solve this using substitution method. Many many thanks

Mathematics
2 answers:
In-s [12.5K]2 years ago
8 0

Answer:

y=2 and x=1

Step-by-step explanation:

sub 2 into 1

3(15-7y) + 4y= 11

45 - 21y +4y =11

-21y+4y= 11-45

-17y= - 34

y=2

Therefore sub y into x equation

x=15-7(2)

x= 1

e-lub [12.9K]2 years ago
5 0

Answer:

<em>3x</em><em> </em><em>+</em><em> </em><em>4y</em><em> </em><em>=</em><em> </em><em>1</em><em>1</em>

x = 15 -7 y

3 (15-7y) = 11

45 - 21y + 4y = 11

45 - 17 y = 11

-17 y =11 -45

-17y ÷ -17 = -34 ÷ -17

y = 2

<em>x</em><em> </em><em>=</em><em> </em><em>1</em><em>5</em><em> </em><em>-</em><em> </em><em>7y</em>

<em>x</em><em> </em><em>=</em><em> </em><em>1</em><em>5</em><em> </em><em>-</em><em> </em><em>7</em><em>(</em><em>2</em><em>)</em>

<em>x</em><em> </em><em>=</em><em> </em><em>1</em><em>5</em><em> </em><em>-</em><em> </em><em>1</em><em>4</em>

<em>x</em><em> </em><em>=</em><em> </em><em>1</em>

<em>there</em><em> </em><em>for</em><em> </em><em>y</em><em> </em><em>=</em><em> </em><em>2</em><em> </em><em>and</em><em> </em><em>x</em><em> </em><em>=</em><em> </em><em>1</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>solution</em>

You might be interested in
Which of the following expressions is equal to 5^6/5^2
Natali5045456 [20]

Answer:

\dfrac{5^6}{5^2} = 5{\cdot}5{\cdot}5{\cdot}5

Step-by-step explanation:

The given expression is :

\dfrac{5^6}{5^2}

We need to find this expression is equal to what.

\dfrac{5^6}{5^2}=\dfrac{5^4\times 5^2}{5^2}\\\\=5^4\\\\=5\times 5\times 5\times 5\\\\\text{or}\\\\=5{\cdot}5{\cdot}5{\cdot}5

Hence, \dfrac{5^6}{5^2} is equal to 5{\cdot}5{\cdot}5{\cdot}5. Hence, the correct option is (c).

5 0
2 years ago
There are 5 types of candy sold in a store, at least 6 candies of each type. in how many ways can one buy n candies so that no t
Brrunno [24]
 well you see i have no idea but i need to ask a question im sorry 
6 0
3 years ago
Hector took out a small loan of $900 for 15 months. The simple interest rate on the loan was 15%. How much will he pay in intere
Liula [17]
So you have to find 15 percent of 900 which would be 135
3 0
3 years ago
Wendy stops running<br> A.Speed<br> B.Velocity <br> C.Acceleration
DedPeter [7]

Answer:

i think is c tell me if im right

7 0
3 years ago
Read 2 more answers
2x+3(x-2)-3(x-6) figuring for X
emmainna [20.7K]

Answer:

2x+12

Step-by-step explanation:

2x+3(x-2)-3(x-6)

2x+3x-6-3x+18

2x-6+18

2x+12

6 0
3 years ago
Read 2 more answers
Other questions:
  • If the volume of a sphere is 36pi cubic units, what is the radius?
    14·2 answers
  • Frank works at our apartment Depot and earns $8.50 per hour. Last week he worked 36 hours. What was his total pay?
    11·2 answers
  • A parabola opening up or down has vertex (0,2) and passes through (6,5). write its equation in vertex form. simplify any fractio
    8·1 answer
  • At the middle school graduation dance,the DJ played 12 slow dances,which was equal to the quotient of the number of fast dances
    13·1 answer
  • What is the correct listed sample space of total outcomes for rolling a die and flipping a coin?
    8·1 answer
  • What are the intercepts?
    12·2 answers
  • Am i gay tell me to me stragiot my phone number is 208 431 7721 A restaurant bill is $25, and a 20 percent tip should be given t
    14·1 answer
  • 1. Consider the first six terms of this sequence: 2, 5, 8, 11, 14, 17,........What would
    9·1 answer
  • Which equation is correct regarding the measure of
    11·1 answer
  • 4a 3b - C<br> per a - 3;<br> b = -1;<br> 1; C = -2
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!