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
harina [27]
3 years ago
10

4x+(x-y/8)=17 and 2y+x-(5y+2/4)=2 by using elimination method

Mathematics
1 answer:
vladimir2022 [97]3 years ago
4 0

Answer:

x=811/238, y=36/119. (811/238, 36/119).

Step-by-step explanation:

4x+(x-y/8)=17

2y+x-(5y+2/4)=2

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

4x+x-y/8=17

5x-y/8=17

40x-y=136

y=40x-136

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

2y+x-5y-2/4=2

2y-5y+x-1/2=2

-3y+x=2+1/2

-3y+x=4/2+1/2

-3y+x=5/2

-3(40x-136)+x=5/2

-120x+408+x=5/2

-119x=5/2-408

-119x=5/2-816/2

-119x=-811/2

119x=811/2

x=(811/2)/119

x=(811/2)(1/119)=811/238

y=40(811/238)-136

y=16220/119-136

y=36/119

x=811/238, y=36/119.

You might be interested in
What is the value of X? Please help me with geometry.
yKpoI14uk [10]

Answer:

x=61

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Answer quick for brainliest!
Gnom [1K]

A

Step-by-step explanation:

8 0
3 years ago
The ratio of bous to girls in the school is 1 to 4. If there are 20 girls, how many boys are there?
anyanavicka [17]

if there's 1 boy to every 4 girls, there's going to be 5 boys for every 20 girls

6 0
3 years ago
Read 2 more answers
-7x - 2y = 19<br> 4x + y = -12<br> Solve the system
nalin [4]

-7x - 2y = 19

4x + y = -12

Set y equal to each other (opposite signs are fine and you could also set x equal instead of y)

-7x - 2y = 19

8x + 2y = -76

Add equations together

x = -52

Plug x value into an equation

4(-52) + y = -12

Solve for y

-208 + y = -12

y = 196

Hope this helps! ;)

4 0
3 years ago
In a certain function, y varies directly with x. If y = 6 when x = 8, find x when y = 9.
Hatshy [7]

If y = 6 when x = 8, then value of "x" when y = 9 is equal to 12

<u>Solution:</u>

Given that , In a certain function, y varies directly with x

And x = 8 when y = 6,

We have to find what will be the value of x when y = 9

Now, from the given information,

\begin{array}{l}{y \alpha x} \\\\ {y=c x \rightarrow(1)}\end{array}

where c is the proportionality constant

\begin{array}{l}{\text { Now, substitute } x=8 \text { and } y=6 \text { in }(1)} \\\\ {\rightarrow 8=c(6) \rightarrow c=\frac{8}{6}} \\\\ {\rightarrow c=\frac{4}{3}} \\\\ {\text { Then, }(1) \rightarrow x=\frac{4}{3} y} \\\\ {\text { So, when } y=9} \\\\ {\rightarrow x=\frac{4}{3}(9)} \\\\ {\rightarrow x=4 \times 3} \\\\ {\rightarrow x=12}\end{array}

Hence, x value is 12 when y value is 9

3 0
3 years ago
Other questions:
  • These questions with these charts are killing me? No matter who I ask no one knows and I already forget /:
    13·2 answers
  • EF is a median of trapezoid ABCD. If the length of AB is 8x, and the length of CD is 20x, what is the length of EF in terms of x
    13·1 answer
  • What is the slope of the line 2x+5y=25
    9·2 answers
  • Which equation represents the sentence? Four more than a number is half the number.
    15·1 answer
  • How many interior angles does a triangle have
    13·2 answers
  • There are 5 songs on an album. If you shuffle the songs on your phone, what is the probability they will play in
    7·1 answer
  • Ar a furniture store, a bed frame costs $440 and mattress costs $654. There are currently 7 bed frames in the store, and togethe
    11·1 answer
  • Find the exact volume of the sphere below
    7·1 answer
  • Which equation can be used to solve for x in the following diagram.
    9·2 answers
  • I donot understand what so ever but brainly has def been helping
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!