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
Illusion [34]
4 years ago
11

Solve 7x – 2y = –3 14x + y = 14 a. (4,5/7) b. (4,7/5) c. (5/7,4) d. (7/5,4)

Mathematics
2 answers:
Marysya12 [62]4 years ago
5 0

Answer:

The answer is the option C (\frac{5}{7}, 4)

Step-by-step explanation:

we have

7x-2y=-3 ------> equation A

14x+y=14 ------> equation B

Multiply by 2 equation B

2*(14x+y)=2*14 ------> 28x+2y=28 -----> equation C

Adds equation A and equation C

7x-2y=-3\\28x+2y=28\\----------\\7x+28x=-3+28\\35x=25\\\\ x=\frac{25}{35}\\\\x=\frac{5}{7}

Find the value of y

14(\frac{5}{7})+y=14

10+y=14

y=14-10=4

the solution is the point (\frac{5}{7}, 4)

den301095 [7]4 years ago
3 0
7x - 2y = -3 . . . (1)
14x + y = 14 . . . (2)
(1) x 2 => 14x - 4y = -6 . . . (3)
(2) - (3) => 5y = 20
y = 20/5 = 4
From (1); 7x - 2(4) = -3
7x - 8 = -3
7x = -3 + 8 = 5
x = 5/7

Solution = (5/7, 4)
You might be interested in
B) Solve x ^ 2 + 5x - 14 = 0
uranmaximum [27]

x^2 +5x -14 =0\\\\\implies x^2 +7x -2x -14 =0\\\\\implies x(x+7) -2(x+7)=0\\\\\implies (x-2)(x+7) =0\\\\\implies x =2~~ \text{or}~~ x =-7

6 0
3 years ago
Read 2 more answers
50 POINTS!!!! HELLPPP PLLZZZ!!!! BRAINLIEST!!!!
MA_775_DIABLO [31]
For a * = 2bc
for b * = 5ab
8 0
3 years ago
Read 2 more answers
Help me, please !! For a reason, Tony took 1/3 his money for book and then he took 1/5 again for beer. And now tony have 28$, ho
lana [24]
(1-1/3)x*(1-1/5)=28 8/15x=28 x=52.5. Therefore, he had 52.5$before
6 0
3 years ago
The population of valleytown is also 5,000 with an annual increase of 1,000. Can the expected population for Valleytown be model
alexandr402 [8]

Answer:

An annual increase of 1000 means that the number by which the population increases is constant, which means that the population cannot be modeled with an exponential growth function, it is modeled by a linear growth function.

Step-by-step explanation:

Linear growth:

The number by which it increases is constant.

Exponential growth:

The rate which it increases is constant, that is, a proportion of population.

Annual increase of 1,000.

An annual increase of 1000 means that the number by which the population increases is constant, which means that the population cannot be modeled with an exponential growth function, it is modeled by a linear growth function.

6 0
3 years ago
The figure is made up of a square and a rectangle. Find the area of the shaded region.
sladkih [1.3K]

first we do

square is length 6 so base =6

10-6=4

the rectangle is 2 by 4

base=4

square is 6 by 6

rectangle is 4 by 2

split the triangles up

area of triangle=1/2base times height

rectangle triangle base=4

height=2, area=1/2 times 2 times 4=4

square triangle

flip 90 degrees clockwise so we have base=2

height=6

area=1/2 times 2 times 6=6

add

4+6=10

total area=10m^2

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of d if the volume of Prism F is 99 cubic units ?
    7·1 answer
  • 7. A cheetah ran 300 feet in 2.92 seconds. What was the cheetah’s average speed in miles per hour? Show your work.
    8·1 answer
  • costomers can pick their own apples at well orchards. they pay 6$ to enter the orchard and 2$ per pound for the apples they pick
    9·1 answer
  • In a recent NBA basketball game, the Hornets were trying to earn a playoff spot with a win
    9·1 answer
  • A car salesman is required to make three sales each day. Experience show that if he visits a customer, the customer will purchas
    9·1 answer
  • What does 474 round to
    14·2 answers
  • Which of the following are true statements.
    9·1 answer
  • Does X goes left or right
    5·2 answers
  • Plz help this is super duper hard
    7·2 answers
  • Find the midpoint of points A(-8, 2) and B(-5, 10)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!