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
Furkat [3]
3 years ago
7

8x+ 7y =39 8x + 2y = 34 What is x and y

Mathematics
1 answer:
anygoal [31]3 years ago
7 0

Answer:

y= 1 and X=4

Step-by-step explanation:

8x +7y =39

8x +2y =34

elimination method(we multiply 8x+7y=39 or 8x + 2y= 34 by -1 to eliminate 8x)

lets multiply 8x+7y = 39 by - 1

-8x -7y = -39

8x +2y = 34

(8x-8x)+(2y-7y)= (-39+34)

0 + (-5y) = -5

-5y= -5......dividing both sides by -5

<em> y = 1</em>

8x +2y =34....... substituting y by 1

8x +2(1)= 34

8x + 2= 34

8x = 34-2

8x = 32.....dividing both sides by 8

<em>x = 4</em>

Lets check;

8x +2y = 34

8(4) +2(1) = 34

32 + 2 =34

<em>34 = 34</em>

8x + 7y = 39

8(4) + 7(1) = 39

32 + 7 =39

<em>39 = 39</em>

You might be interested in
Someone plz help me giving brainliest
Flauer [41]

The answer is on the picture!!

3 0
2 years ago
How to make a standard form equation from two points
vodomira [7]
You use y=mx+b...  idk if that helped or not :)
4 0
3 years ago
Fudge costs $2.50 per pound. Emilio has a coupon for $5 off his entire order of fudge. Write an equation to find y, the total co
vampirchik [111]
answers? you kinda need to put the OH-
5 0
3 years ago
Read 2 more answers
Could anyone help??????????????
kvasek [131]

Answer:

a. No

b. Yes

c. No

d. Yes

e. Yes

Step-by-step explanation:

3(x+2) simplified is equal to (3)x+(3)2 which is simplified to 3x+6.

a. 3x+2 is not the same as 3x+6 so it is false.

b. 3(2+x) is simplified to (3)2+3(x) which is simplified to 6+3x or 3x+6 which is equal to 3x+6 so it is true.

c. 3x+2x is simplified to 5x which is not equal to 3x+6 so it is false.

d. x+2x+2+4 is simplified to 3x+6 which is equal to 3x+6 so it is true.

e. x+x+x+1+1+1+1+1+1 is simplified to 3x+6 which is equal to 3x+6 so it is true.

If this answer has helped you please mark as brainliest

8 0
3 years ago
Find the value of x.<br> 6x+3(-3x+4)=13
iren [92.7K]

Answer:

x= -1/3 or -0.3

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • 10k to the third power + 8k to the second power + 10 divided by (k+1)
    15·1 answer
  • The radius of a sphere is 1 inch. Which expression represents the volume of the sphere?
    5·1 answer
  • What is -5 1/2 - 4 1/4 + 6 3/4
    7·1 answer
  • Kate has 1 dime, 4 nickels, and 8 pennies.
    9·2 answers
  • How does 4D Shape look like? and, do (4 &lt; n)D are possible?
    8·2 answers
  • The area of a triangle is 30cm and its base is 10cm. What is the height, in cm, of the triangle
    14·2 answers
  • True or false the focus of an ellipse lie on the major axis of the ellipse
    13·2 answers
  • I'm not sure how to do this
    5·1 answer
  • Brian had $26 when he went to the fair. After playing 7 games, he had $15.50 left. Find the price for each game.​
    6·1 answer
  • What is the data value (runs) that had the greatest frequency? NO LINKS!!!​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!