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
DanielleElmas [232]
2 years ago
8

What is the solution to the system of equations {−3x+5y=12 7x−5y=−28?

Mathematics
2 answers:
Tatiana [17]2 years ago
8 0

Answer:

\boxed{x = -4~~and~~y = 0}

.

Step-by-step explanation:

Use elimination

-3x + 5y = 12

<u>7x - 5y = -28  </u>+

4x = -16

x = \frac{-16}{4}

x = -4

.

Subsitute the value of x to one of equations

-3x + 5y = 12

-3(-4) + 5y = 12

12 + 5y = 12

5y = 12 - 12

5y = 0

y = \frac{0}{5}

y = 0

.

Happy to help :)

V125BC [204]2 years ago
5 0

Answer:

x=-4 and y=0

Step-by-step explanation:

You might be interested in
Jacob used 1/7 of a liter of water to fill 1/9 of the fish aquarium. How many liters of water are needed to fill the aquarium?
laila [671]
Jacob used 1/7 of a liter of water.
He needs to fill 1/9 of the fish aquarium.
Find how many liters would Jacob need to fill the aquarium
=> Let x = liters of water need to fill the aquarium
=> x/1 = 1/7 divided by 1/9
=> x = 1/7 x 9/1
=> x = 9/7, since this is an improper fraction, let’s convert it to mixed fraction
=> x  = 1 and 2/7
So, Jacob need 1 and 2/7 liter of water to fill the whole aquarium.



3 0
3 years ago
Evaluate expression
fiasKO [112]
My calculator gave me the answer -43/24. Hope this helps. If its wrong I'm sorry.
4 0
3 years ago
I need to solve for x
Lady bird [3.3K]

Answer:

x=7

Step-by-step explanation:

\frac{x}{15}=\frac{8}{17}

17x=120

x=7.05882352941

x=7

Hope this helps! :)

8 0
2 years ago
the ratio of students who walked home from school to the students who ride the bus home is 2.7. The number of the bus riders is
cupoosta [38]

Answer:

3.5

Step-by-step explanation:

If there are 9 students total and the ratio is 2:7 for walk home to ride bus then the answer would you would divide 2 from 7 which can be written as 7/2 then you would get your answer. Plus if the question says how many times the number... that means division:).

HOPE THIS HELPS!!:)

7 0
3 years ago
Write 3 x 7 x 7 x 7 x 7 as a index notation ​
statuscvo [17]

Answer:

3 x 7 x 7 x 7 x 7

= 3 x 7^{4}

7 0
2 years ago
Other questions:
  • a goat tethered to a stake by a rope has grazed the meadow over an area of 12.56msqare around it stretching the rope. i) what is
    12·2 answers
  • the volume for a extra large tub of popcorn is 784. The popcorn costs 9.99. What is the price per cubic inch for the Extra Large
    7·2 answers
  • What is the value of y in the equation 2 + y = −3?
    5·2 answers
  • how many meatballs are required fora party of 10 adults and 5 childen? fomual is m=4a+2 where c= children and m=meatball and a=
    9·1 answer
  • Mmunity/classes/5d62d69dab3b9d01c471275e/assignments/ea5fbdc266ba4fb6b42ef10035395865/content/33670082-1319-3919-b805-037d3a9e87
    6·1 answer
  • Daniel wants to do 312 practice problems to prepare for an exam. if he wants to do approximately the same number of problems eac
    5·1 answer
  • Write down the least number of sectors that will cover a
    12·1 answer
  • Supplementary angles are two angles whose measures have a sum of 180∘. What is the value of x? Write and solve an equation for x
    15·1 answer
  • Angles PTQ and STR are vertical angles and congruent.
    8·1 answer
  • Which pair does not fit. 15 points! 5 more than the average!
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!