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
hammer [34]
3 years ago
11

Solve by elimination 2x+5y=17 6x-5y=19

Mathematics
1 answer:
zhenek [66]3 years ago
3 0
<h3><u>The value of y is 1.6</u></h3><h3><u>The value of x is 4.5</u></h3>

By elimination:

2x + 5y = 17

6x - 5y = 19

<em><u>We can add the second equation to the first in order to isolate one variable.</u></em>

(2x + 5y) + (6x - 5y)

8x = 17

<em><u>Because we added the left side, we have to add the right side here as well.</u></em>

17 + 19 = 36

8x = 36

<em><u>Divide both sides by 8</u></em>

x = 4.5

We can plug this value back into the original equation to find the value of y.

2(4.5) + 5y = 17

9 + 5y = 17

<em><u>Subtract 9 from both sides.</u></em>

5y = 8

<em><u>Divide both sides by 5.</u></em>

y = 1.6


You might be interested in
Find the difference: 28y − 16y. Select one of the options below as your answer:.A. 12y. B. 10y. C. -44y. D. -12y
Reptile [31]
28y - 16y = 12y
answer is A. 12y
8 0
3 years ago
a company or the 10 box lunches from a deli for $74.50 each box lunch cost the same amount which equation represents a proportio
TiliK225 [7]

Hi!

<em>Step:</em>

<h3>We need to divide $74.50 by 10.</h3><h3>So we get $7.450 </h3><h3>but we remove the 0 :)</h3><h3 /><h3>Knowing that x is the number of boxed lunches and the company would have to pay $7.45.</h3><h3 /><h3>we can just do <em>7.45x = y</em> where y is the total cost for the lunches.  </h3><h3 /><h3 />

<em>So the answer is:</em>

<h3>$7.45</h3><h3 />

:D

<h3 /><h3 /><h3 /><h3 /><h3 />
7 0
3 years ago
Two of the golf scores at the local tournament were unreadable, but the mean score was 85 and the lowest score was 75. if the re
Vika [28.1K]

Step-by-step explanation:

Assuming the readable scores are:

100, 82, 95, __ , 90, 81, 75, 83, __

We know the mean (or average) is 85, so:

85 = (100 + 82 + 95 + x + 90 + 81 + 75 + 83 + y) / 9

765 = 606 + x + y

159 = x + y

We know the lowest score is 75, so x and y must be at least 76.  Possible answers are:

76 and 83

77 and 82

78 and 81

79 and 80

80 and 79

81 and 78

82 and 77

83 and 76

6 0
3 years ago
Solve the polynomial: 2x³-11x²+18x-8=0
kotykmax [81]

Answer:

2/0.74

Step-by-step explanation:

To solve the polynomial, factorize it.

2x³-11x²+18x-8=0

After factorizing:

(x-2)(2x^2 - 7x +4) = 0

now, solve each bracket one by one:

x-2 = 0

x = 2

Then

2x^2 - 7x + 4 = 0

use quadratic formula t get 0.74

7 0
3 years ago
The bag contains. 1 blue 2 green 3 yellow and 3 red marbles. What is the probability of grabing a red marble without looking.
tekilochka [14]
3/8, you have a three out of eight chance of grabbing a red marble
5 0
3 years ago
Other questions:
  • If m6 = 123.5°, then m1 is 56.5°. 67.5°. 123.5°. 136.5°.
    6·2 answers
  • In a city school of 900 students, 35% of the students are on the honor roll, 63% have a part-time job, and 26% are on the honor
    8·1 answer
  • The weight of a package increases by 2 pounds. The new weight of the package is 8 pounds. Write an equation to represent the sui
    8·2 answers
  • Find the value of xxx in the isosceles triangle shown below.
    7·1 answer
  • A submarine is at the depth of -300 meters. It is rising 50 meters every hour. What is the depth of the submarine after 4 hours?
    14·1 answer
  • 5x+3y=15 <br> solve for y
    7·1 answer
  • Find the missing length indicated.​
    6·1 answer
  • I need help asap …………..
    8·1 answer
  • 7x+4=7x+-4 help pls
    14·1 answer
  • find the common difference and the three terms in the sequence after the last one given -39 -33 -27 -21​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!