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
Aleonysh [2.5K]
3 years ago
6

E - 2f = -10 8e + 4f = 0

Mathematics
2 answers:
harkovskaia [24]3 years ago
6 0

Answer:

e=-2, f=4. (-2, 4).

Step-by-step explanation:

e-2f=-10

8e+4f=0

-------------

e=-10+2f

e=2f-10

8(2f-10)+4f=0

16f-80+4f=0

20f=0+80

20f=80

f=80/20

f=4

e-2(4)=-10

e-8=-10

e=-10+8

e=-2

Alik [6]3 years ago
3 0

Answer:

f = 4 e = -2

Step-by-step explanation:

e - 2f = -10

8e + 4f = 0

Solve by substitution

8e + 4f = 0

8e = -4f

e = -0.5f

Substitute into e - 2f = -10

-0.5f - 2f = -10

-2.5f = -10

2.5f = 10

f = 4

Substitute into 8e + 4f = 0

8e + 16 = 0

8e = -16

e = -2

You might be interested in
How do you determine if a given set of measurements works for the side lengths of a triangle? (It should be a number)
zaharov [31]
Add them all up and if they add up to 180 then your side lengths are good
5 0
4 years ago
Solve the following system of equations using substitution.<br><br> 4x + 2y = 12<br> x = y + 3
BigorU [14]

Answer:

x = 3

y = 0

Step-by-step explanation:

The method of substitution is when one solves an equation for one of the variables, and then substitutes the expression into the other equation. After doing so, one will solve the other equation for the remaining variable and then backsolve for the first variable.

4x + 2y = 12

x = y + 3

The second equation is already sovled for parameter (x), subttiute this into the other equation,

4(y + 3) + 2y = 12

Distribute,

4y + 12 + 2y = 12

Simplify,

6y + 12 = 12

Inverse operations,

6y + 12 = 12

-12

6y = 0

/6

y = 0

Backsolve for (x), substitute the value of (y) into the equation for (x) and solve,

x = y + 3

x = 0 + 3

x = 3

4 0
3 years ago
Read 2 more answers
5 pounds=. Ounces<br><br><br> I need helppp
Vika [28.1K]
<h3>Answer:  80 ounces</h3>

Work Shown:

1 pound = 16 ounces

5*(1 pound) = 5*(16 ounces)

5 pounds = 80 ounces

7 0
3 years ago
Read 2 more answers
Describe how adding and subtracting mixed numbers can help you with recipes.
anygoal [31]
Say you're making a recipe that needs 2 1/2 cups of water. But you want to make two servings, so you need to know what 2 1/2 + 2 1/2 equals. Or maybe you need a half cup of milk but you don't have enough. You need to know how much left you need so you can buy or borrow the right amount.
3 0
3 years ago
Read 2 more answers
What's the answer for answer A and c ?
marta [7]
Did you attach a photo? i’m a bit confused
6 0
3 years ago
Read 2 more answers
Other questions:
  • Warren wants to build a rectangular enclosure for his animals. one side of the pen will be against the barn, so he needs no fenc
    14·1 answer
  • Given the function g(x)=−2x−8, evaluate g(−3).
    10·1 answer
  • In sale the normal price is reduced by 10% Nathalie bought a pair of shoes in the sale of 54 whats the original price
    8·1 answer
  • Ashton used 12.6 gallons of gasoline to drive his car on a weekend trip. he averaged 21.5 miles per gallon. about how many miles
    9·1 answer
  • If parallelogram JKLM is rotated 270° counterclockwise around the origin, what are the coordinates of the endpoints of the side
    11·2 answers
  • What is the mean of the data set rounded to the nearest tenth
    8·2 answers
  • Which of the following statements is true about the function presented in the table?
    13·1 answer
  • 14. What, if any, is a real solution to 5x +1 +9 - 3?<br> 1<br> C<br> D. There is no real solution.
    7·1 answer
  • Pls help asap
    9·2 answers
  • Can someone pls help me with this question ​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!