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
Sindrei [870]
3 years ago
15

How can u solve this by system of equations by elimination 4x-5y=6;2x+5y=-28

Mathematics
1 answer:
gayaneshka [121]3 years ago
4 0

Answer:

x=17/3, y=10/3. (17/3, 10/3).

Step-by-step explanation:

4x-5y=6

2x+5y=-28

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

4x-5y=6

-2(2x+5y)=-2(-28)

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

4x-5y=6

-4x-10y=56

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

-15y=-50

15y=50

y=50/15

y=10/3

4x-5(10/3)=6

4x-50/3=6

4x=6+50/3

4x=18/3+50/3

4x=68/3

x=(68/3)/4

x=(68/3)(1/4)=68/12=17/3

You might be interested in
6(6v +6) - 5 = 1 + 6v<br><br> Need answer with explaination
Tresset [83]

Answer:

v=-1

Step-by-Step Explanation:

6 0
2 years ago
Read 2 more answers
A coin is tossed and an eight​-sided die numbered 1 through 8 is rolled. Find the probability of tossing a head and then rolling
ratelena [41]

Answer: 7/8

Step-by-step explanation:

Probability is calculated by number of possible outcomes/ total outcomes

From the question, a coin only has two sides, Head or Tail. Total outcomes is therefore equal to 2

Possible outcome is to toss a head, which is one event

Probability of tossing a head is therefore =1/2

The second part of the question is rolling a die with eight sides.

Here, the die is said to have eight sides, 1,2,3,4,5,6,7,8. Total outcomes is therefore equal to 8

Possible outcome of rolling a number greater than 5 is 3 possibilities, that is rolling 6, 7 and 8.

Pr(rolling > 5) is 3/8

Therefore, Pr ( head; rolling > than 5)

= 1/2 + 3/8

=7/8

I hope this is clear, please mark as brainliest answer

6 0
3 years ago
Use unit circle to determine sine, cosine and tangent functions of the angle 5pi/4
Brrunno [24]
5pi/4 is located in quadrant III.
In Q III, sin and cos are negative, tan is positive.
T-bar for 5pi/4 is pi/4.
sin and cos are - (sqrt 2)/2
Tan is 1
5 0
3 years ago
Read 2 more answers
Answer one question.
sweet-ann [11.9K]

Answer:

i think D) x > -21 is answer

6 0
3 years ago
Find the length of the third side. If necessary, round to the nearest tenth.This is on Pythagorean theory​
kenny6666 [7]

Answer:

23 because the 24 side is a little bigger than the other side

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • 1. Solve: 2a - b = ac + for a
    11·1 answer
  • Vertical Compression of 1/3, right 2!!!
    7·1 answer
  • In 2000, the population of Big Springs was 13 thousand. Use the given doubling
    9·1 answer
  • HELP IVE BEEN STRUGGLING FOR THE PAST 15 MIN PLEASEEEEE
    6·2 answers
  • NEED ANSWER QUICK!!!
    8·2 answers
  • Match the function with the graph.
    13·2 answers
  • I need help with Geometry
    6·2 answers
  • Explain how to do distributive property. Use an example.
    6·1 answer
  • A letter used to represent a number in equations or expressions
    6·1 answer
  • HELP ME PLEASE ILL GIVE Y BRAINKY AND MORE POINTS
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!