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
Allushta [10]
4 years ago
8

What values of x and y satisfy -13/3 x-2 y=7 and 3x+2/5 y=5 simultaneously?

Mathematics
1 answer:
Aloiza [94]4 years ago
3 0
Multpiply first equation by 3 and second by 5 to clear nasty faractions

-13x-6y=21
15x+2y=25

now see which ones we can clear
we can clear y
multiply second equation by 3 and add to the first equation

-13x-6y=21
<u>45x+6y=75 +</u>
32x+0y=96

32x=96
divide both sides by 32
x=3

sub back
15x+2y=25
15(3)+2y=25
45+2y=25
minus 45 from both sides
2y=-20
divide both sides by 2
y=-10

x=3
y=-10
(3,-10)
You might be interested in
Y=4x-1<br> if the value of y is 1 what is x
Flura [38]
Y= 4x-1
If y is 1, then plug 1 in the equation,
1= 4x-1
Add 1 on both sides,
2= 4x
Divide by 4 on both sides,
x= 4/2
Reduce 4/2 to 1/2
Therefore, x= 1/2
8 0
3 years ago
Read 2 more answers
Geometry test please help. <br> 3). Find x <br> 4). find m 5). Find m &lt; y <br> 6.) Find m
Mrac [35]

Answer:

x = 30

m<Y = 60

m<Z = 60

m<X = 60

Step-by-step explanation:

All of this should add up to 180 so...

2x + 2x + 3x - 30 = 180 (collect like terms)

7x - 30 = 180 (add 30 on both sides)

7x = 210 (divide by 7 on both sides)

x = 30

PLUG IN

2(30) = 60

3(30) - 30

90 - 30 = 60

m<Y = 60

m<Z = 60

m<X = 60

equilateral triangle

Hope this helps ya! Keep smiling!

7 0
3 years ago
What is the value of x?
nika2105 [10]

AC is the hypotenuse of triangle ABC.

Because the length is 6√2 and angle A is 45 degrees, we know the length of both sides is 6.

This means AB is 6, which it the hypotenuse of triangle BCD.

Using cos(angle) = adjacent leg / hypotenuse we can find x:

cos(60) = X / 6

x = 6 * cos(60)

x = 3

8 0
3 years ago
Read 2 more answers
What type of graph is this?<br> not a regular graph<br> a regular graph
Ivanshal [37]
That is not a regular graph
5 0
3 years ago
Erin built a rectangular-prism-shaped trough for her horses to eat from. The Trough is 3m long,1m wide,and 1m high ,hay for the
fomenos
You find volume by multiplying width by length by height so 

3 x 1 x 1 =  3 

so the volume is 3 cubic meters and every cubic meter of hay costs $14 so 

3 x 14 = 42

$42
4 0
3 years ago
Read 2 more answers
Other questions:
  • Привіт ти можеш мені допомогти, будь ласка?)
    7·1 answer
  • In simplest radical form, what are the solutions to the quadratic equation 0 = –3x2 – 4x + 5
    5·1 answer
  • Need help with this. was removed when i posted it
    5·1 answer
  • Lauren has a paper with a seven-digit phone number that has the last three numbers smudged so that she cannot see them. The firs
    5·1 answer
  • Which symbol is needed between -2? |-3| to make a true statement? PLS HELP
    11·1 answer
  • The graph shows a distribution of data. What is the standard deviation of the data? A)0.5 B)1.5 C)2.0 D)2.5
    10·2 answers
  • Ramon walks at a constant rate of 6mi/hr. Write an equation using the variables m and h to represent how many miles he would wal
    12·1 answer
  • Please help I do not know how to do this
    5·2 answers
  • Which of the following expressions is equal to x² + 36? *
    13·1 answer
  • In right triangle EAD with right angle at A, AE=4 units, AB=BC=CD and the area of triangle ABE=6 sq units. What is the length of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!