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
malfutka [58]
3 years ago
7

5) x - 4y = 28 -4x - y = 7 Solve each system by elimination

Mathematics
2 answers:
Novay_Z [31]3 years ago
8 0

Answer:

(0,-7)

Step-by-step explanation:

x-4y=28      multiply by 4

-4x-y=7       multiply by 1

4x-16y=112

-4x-y=7

cross out the x and add the rest

-17y= 119

divide by -17

y= -7

now you substitute the y in one of the equations.

the reformed equations

we will use the second one

-4x-(-7)=7

two negative becomes a plus

-4x+7=7

now you minus the 7 to both sides

-4x=0

now divide by -4

x=0

(0,-7)

dexar [7]3 years ago
3 0

Answer:

x = 0, y = -7

Step-by-step explanation:

x - 4y = 28

-4x - y = 7

____________

x - 4y = 28

-16x - 4y = 28

____________  _

17x = 0

x = 0

0 - 4y = 28

y = -7

You might be interested in
What is the length of segment RS?
Evgesh-ka [11]

Answer:

3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
By how much is the product of 9/5 and 8 1/4 greater than 5
Oliga [24]

Given:

The product of \dfrac{9}{5} and 8\dfrac{1}{4} greater than 5.

To find:

By how much the product of \dfrac{9}{5} and 8\dfrac{1}{4} greater than 5.

Solution:

First we need to find the product of \dfrac{9}{5} and 8\dfrac{1}{4}.

\text{Product}=\dfrac{9}{5}\times 8\dfrac{1}{4}

\text{Product}=\dfrac{9}{5}\times \dfrac{8(4)+1}{4}

\text{Product}=\dfrac{9}{5}\times \dfrac{33}{4}

\text{Product}=14.85

Now subtract 5 from the product.

14.85-5=9.85

Therefore, the product of \dfrac{9}{5} and 8\dfrac{1}{4} is 9.85 greater than 5.

3 0
2 years ago
What does an S-shaped curve for population growth suggest?
LuckyWell [14K]
A pattern of growth<span> in which, in a new environment, the </span>population<span> density of an organism increases slowly initially, in a positive acceleration phase; then increases rapidly, approaching an exponential </span>growth<span> rate</span>
7 0
3 years ago
Read 2 more answers
Martina drove 385 miles in 7 hours. at the same rate, how long would it take her to drive 495 miles?
Anarel [89]

385/7 = 495/x

Answer: 9 hours

5 0
3 years ago
Read 2 more answers
I don’t how to solve this problem
Illusion [34]
If you divide the larger lake's size by the smaller lake's size, you'll get the answer.
890/80=11.125
Rounds off to 11.13
Answer C
***
example, 10/2=5. 10 is 5 times larger than 2.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Find the value of y
    5·1 answer
  • A light bulb consumes
    11·1 answer
  • What word describes the equal shares of the shape
    7·1 answer
  • HELLLPPPPPPPPPPPPPPPPP
    10·1 answer
  • Lois and Clark own a company that sells wagons. The amount they pay each of their sales employees (in dollars) is given by the e
    10·1 answer
  • Which expression is equivalent to 9m – 36?
    11·1 answer
  • Enter the unknown value that makes this statement true: 20% of ? is 40. ​
    12·1 answer
  • Find the surface area
    5·1 answer
  • Suppose y varies directly with x. Write a direct variation equation that relates x and y. Then find the value of y when x= 18.
    10·1 answer
  • The SkyWheel has 42 glass enclosed gondolas. What is the measure of each central angle between gondola cars, to the nearest hund
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!