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
soldi70 [24.7K]
3 years ago
7

Look at picture. What is the solution WORTH 10 points. Show work.

Mathematics
2 answers:
lakkis [162]3 years ago
8 0

\left\{\begin{array}{ccc}2x-y=6\\2x-2y=4&|\text{add 2y to both sides}\end{array}\right\\\left\{\begin{array}{ccc}2x-y=6\\2x=4+2y&|\text{divide both sides by 2}\end{array}\right\\\left\{\begin{array}{ccc}2x-y=6\\x=2+y\end{array}\right\\\\\text{Substitute x=2+y to the first equation}\\\\2(2+y)-y=6\ \ \ \ |\text{use distributive property}\\(2)(2)+(2)(y)-y=6\\4+2y-y=6\\4+y=6\ \ \ \ \ |\text{subtract 4 from both sides}\\\boxed{y=2}\\\\\text{Put the value of y to the second equation}\\\\x=2+2\\\boxed{x=4}

Answer:\ D.\ (4,\ 2)

Hatshy [7]3 years ago
5 0

Hey there!!

The two equations we have :

2x - y = 6 ---------- ( 1 )

2x - 2y = 4 ----------- ( 2 )

Now subtract the second equation from the first equation :

2x - y = 6 ------ ( 1 )

- 2x + 2y = -4 ------ ( 2 )

y = 2

We have got the answer for y which is 2

Now we will have to substitute this value in place of y and find x

2x - y = 6

2x - 2 = 6

2x = 8

x = 4

For a ordered pair, the coordinates are written as ( x , y )

We got x = 4 and y = 2

Hence, the answer is ( 4 , 2 ) option d

Hope my answer helps!

You might be interested in
Y=3x-4;y=4+x substitution
Gnesinka [82]

Answer:

y=54

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Help! I just need help with graphing the table. That's all.
umka2103 [35]

hmmmmmmmmmmmmmmmmmmmmm

7 0
3 years ago
The formula to find the perimeter of a rectangle is P = 2l + 2w. Solve for w.
8_murik_8 [283]

Answer:

W =<u> P - 2L </u>

         2

Step-by-step explanation:

perimeter P = 2L + 2W

P - 2L = 2W

W =<u> P - 2L </u>

         2

4 0
3 years ago
RESUELVE EL SIGUINTE PORBLEMA En la escuela "Soy Feliz porque soy diverso", hay 230 estudiantes en total. De estos, 35 son mujer
Tanzania [10]

Answer:

1) a. 195 are males

b. Males are the 85 %

2) 1/2

Step-by-step explanation:

Number of all the students: 230

35 are females

x are males

Then 35 + x = 230

x = 230 - 35 → 195

To determine the amount of males, from the total we apply the percent.

Percent = (Amount of males / Total of students) . 100

% = (195 / 230) . 100 = 85 %

2. In first place, Maria spent 13 for the book.

In second place, Maria spent 29 for the pencil box.

In total, she has spent 13+29 = 42

But, how many dolars have the grandpa gave to her?.

We can also apply percent and fractions, where:

(Book / Total) + (Pencil box/Total) + (What she did not spend/Total) = 1

13 + 29 + x = T

13/T + 29/T + x/T = 1, in conclussion x = 42

Total of money given = 84

Then, Maria has not spent the half of money→ 1/2

7 0
3 years ago
Suppose you have 18 objects (10 of type A, 5 of type B, and 3 of type C). Objects of type A are indistinguishable from each othe
Paladinen [302]

Answer:

\binom{18}{5}= 8568

Step-by-step explanation:

Note that we have in total 18 items. Even though we are given information regarding the amounts of items per type, the general question asks the total number of ways in which you can pick 5 out of the 18 objects, without any restriction on the type of chosen items. Therefore, the information regarding the type is unnecessary to solve the problem.

Recall that given n elements, the different ways of choosing k elements out of n is given by the binomial coefficient \binom{n}{k}).

Therefore, in this case the total number of ways is just \binom{18}{5}=8568

5 0
3 years ago
Read 2 more answers
Other questions:
  • Please Help!!!
    13·1 answer
  • Would it be possible for quadratic to have more than one factored form? Why or why not.
    15·1 answer
  • What is the reflection image of (5,-3) across the y-axis
    10·2 answers
  • What is 8 divided by 3
    7·1 answer
  • I dont know the x of 30-2x=22
    8·2 answers
  • 2x-4=x+6 how solve this
    12·1 answer
  • Before tax, the price of fuels $3.40 per liter.
    11·1 answer
  • Hello I need help on Number 9​
    8·1 answer
  • Can someone solve or explain to me how to do this?
    11·1 answer
  • The ratio of the angle measures in a triangle is 11 : 14 : 20. Find the angle measures. Then classify the triangle by its angle
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!