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
Yakvenalex [24]
3 years ago
8

PLEASE HELP!!!

Mathematics
2 answers:
Ymorist [56]3 years ago
4 0

Answer:

found:

x=−3

y=5

Explanation:

I would multiply the first equation by −4 and the second by 3 and add together the two equatins (in columns):

{−12x−28y=−104

{12x+15y=39

0−13y=−65

So: y=6513=5

Substitute back this value into the first equation:

3x+7⋅5=26

3x=26−35=−9

x=−93=−3

Step-by-step explanation:

Its second

BaLLatris [955]3 years ago
3 0

Answer:

(4,2)

Step-by-step explanation:

-3x+5y=-2

3x+7y=26

I will add the two equations to eliminate x

-3x+5y=-2

3x+7y=26

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

0x + 12y = 24

Divide by 12

12y/12 = 24/12

y =2

Now find x

3x+7y =26

3x+7*2 =26

3x+14= 26

Subtract 14 from each side

3x+14-14 =26-14

3x= 12

Divide by 3

3x/3 =12/3

x=4

You might be interested in
A map has a scale showing 3 inches represents 11 km. How many miles apart
jekas [21]

Answer:

Step-by-step explanation:

Direct proportion.

Distant between two cities= 11/3 * 9.7 = 106.7/3 = 35.56 km

3 0
3 years ago
What is the snswer to this qustion if you answer this thanks
Svetradugi [14.3K]
18-inch piece per present.

There are 7 presents

That means the total amount needed would be 18 * 7 = 126

The person has 120. 120 is less than 126, so no there isn't enough.
3 0
3 years ago
Please help with this question, I need the help urgently
grin007 [14]

Answer:

P in terms of V is:

P = 432/V

Step-by-step explanation:

We know that y varies inversely as x, we get the equation

y ∝ 1/x

y = k/x

k = yx

where k is called the constant of proportionality.

In our case,

P is inversely proportional to V

Given

P = 18

V = 24

so

P = k/V

k = PV

substituting P = 18 and V = 24 to determine k

k = 18 × 24

k = 432

now substituting k = 432 in P = k/V

P =  432/V

Therefore, P in terms of V is:

P = 432/V

5 0
4 years ago
The sum of twice a number and 15
ale4655 [162]
2x +15 is the equation
7 0
3 years ago
Read 2 more answers
An artist needs to paint a mural on a wall. The mural needs to be 15 feet high. The mural is to be drawn to scale
Illusion [34]

Answer:

225 feet

Step-by-step explanation:

if you multiply 15 x 15 you get 225

if this is wrong i am so sorry

3 0
3 years ago
Other questions:
  • Let f(x) = 3x + 8 and g(x) = x2<br> Find (f.g)(x).
    13·1 answer
  • ( PLEASE HELP 40 POINTSZZZZZZZZZZ)
    10·1 answer
  • Send help? Plz :) thank u
    10·1 answer
  • Plz help
    5·1 answer
  • Using the attached link below.
    6·1 answer
  • Is triangle WSR inscribed in circle A?<br><br> yes<br> no
    13·2 answers
  • Find the measure of &lt;4.<br> 44<br> 158°<br> s<br> * 4 = [?]<br> Enter
    5·2 answers
  • Sketch the curve of y=x² with conclusion.​
    9·1 answer
  • Who is faster: Griffin running 50 meters in 15.5 seconds or Lael running 60 meters in 19 seconds?
    10·1 answer
  • Can someone help me
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!