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
alexandr402 [8]
3 years ago
7

Y=2x-7, 3x-2=9 solving systems

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
6 0
First you solve for x for the second system. Then you plug in x and y and then you should get your coordinates.

You might be interested in
Two families are planning a trip to Disney. The Smith family bought tickets for 2 adults and 3 children for $557. The Jones fami
emmainna [20.7K]

<em>An adult ticket costs $205 and a child ticket costs $49.</em>

<h2>Explanation:</h2>

Hello! Recall you have to write complete questions in order to find exact answers. Here I'll assume the complete question as:

<em>Two families are planning a trip to Disney. The Smith family bought tickets for 2 adults and 3 children for $557. The Jones family bought tickets for 2 adults and 1 child </em><em>for $459</em><em>. How much does and adult and child ticket cost?</em>

To solve this problem, we need to write a system of linear equations in two variables. So, we know some facts:

  • Two families are planning a trip to Disney.
  • The Smith family bought tickets for 2 adults and 3 children for $557.
  • The Jones family bought tickets for 2 adults and 1 child for $459.

Let:

x:Cost \ of \ ticket \ per \ adult \\ \\ y: Cost \ of \ ticket \ per \ child

For the Smith family:

Cost for the 2 adults:

2x

Cost for the 3 children:

3y

Total cost:

2x+3y=557

For the Jones family:

Cost for the 2 adults:

2x

Cost for the 1 child:

y

Total cost:

2x+y=459

So we have the following system of linear equations:

\begin{array}{c}(1)\\(2)\end{array}\left\{ \begin{array}{c}2x+3y=557\\2x+y=459\end{array}\right.

Subtracting (2) from (1):

\begin{array}{c}(1)\\(2)\end{array}\left\{ \begin{array}{c}2x+3y=557\\-(2x+y=459)\end{array}\right. \\ \\ \\ \begin{array}{c}(1)\\(2)\end{array}\left\{ \begin{array}{c}2x+3y=557\\-2x-y=-459\end{array}\right. \\ \\ \\ (2x-2x)+(3y-y)=557-459 \\ \\ 2y=98 \\ \\ y=49 \\ \\ \\ Finding \ x \ from \ (1): \\ \\ 2x+3(49)=557 \\ \\ 2x=557-147 \\ \\ 2x=410 \\ \\ x=205

Finally, <em>an adult ticket costs $205 and a child ticket costs $49.</em>

<em></em>

<h2>Learn more:</h2>

System of linear equations: brainly.com/question/13799715

#LearnWithBrainly

3 0
4 years ago
Snow White is sewing stockings for the animals that visit her in the forest. When she looks around, she sees 38 legs. She knows
ololo11 [35]

Answer:

B=1 M=6 D=3

Step-by-step explanation:

the equations are 4M+4D+2B=38

                               M+D+B=10

                              2D=M

step two: 4M+4D+2B=38 (multiply 2nd equation by -4)

               -4M-4D-4B=-40

4M AND 4D cancels out and your left with -2B=-2 B=1

then you take the first equation and subsitute the third equation for M

step three:  M+D+1 =10 (SUBSITUTE B WITH 1)

M+D=9

STEP FOUR: take the last equation (M+D=9) and subsitute 2D=M

2D+D=9

3D=9

D=3

subsitute D=3 into 2D=M  so you get 2(3)=M M=6

DOUBLE CHECK USE THE SECOND EQUATION

M+D+B=1-

6+3+1=10

5 0
3 years ago
a rectangular feild is 16metre long and 10 metre wide.there is a uniform width all around it having an area of 120metre square​
Anni [7]

Answer:

2 metre

Step-by-step explanation:

let the width around the field be x metre

then (16+2x)(10+2x)-16×10=120

160+32x+20x+4x²-160=120

4x²+52x-120=0

or x²+13x-30=0

x²+15x-2x-30=0

x(x+15)-2(x+15)=0

(x+15)(x-2)=0

either x+15=0,

x=-15 (Rejected being negative)

or x-2=0

x=2 metre

5 0
3 years ago
Solve this please question
MAXImum [283]

Answer:

the speed will be 3 meters

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Factor: 42x + 14 *<br> Please help me with this question
Deffense [45]

Answer:

x = 0.3333333333

Step-by-step explanation:

Simplifying

42x = 14

Solving

42x = 14

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '42'.

x = 0.3333333333

Simplifying

x = 0.3333333333

8 0
3 years ago
Other questions:
  • Can I have some help please? Thanks!
    12·1 answer
  • An airplane makes a 400-mile trip against a head wind in 4 hours. The return trip takes 2.5 hours, the wind now being a tall win
    14·1 answer
  • What number belongs in the space below
    12·1 answer
  • Please respond asap!!!
    10·2 answers
  • If you are adding 2 fractions that are both greater than 1/2, what must be true about the sum? Give three examples to support yo
    14·2 answers
  • Find the surface area of a cylinder Give your answer in pi
    6·1 answer
  • Helppppp pleaseeeeeee:/
    9·2 answers
  • A shipping box has the dimensions shown what is the volume of the box in cubic yards? 1-4 yard 1-4 yard 1-2 yard
    6·1 answer
  • Simplify the expression. .<br><br> 2.3h( 6 – k)<br><br> Step by step please
    6·1 answer
  • Jeans (x) cost $10, shirts (y) cost $5, and socks (z) cost $3. On Wednesday a store sold a total of 150 items for a total of $90
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!