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
solniwko [45]
3 years ago
8

Y=-x-5 2x+y=5 substitution method

Mathematics
1 answer:
Mumz [18]3 years ago
5 0

Answer:

x = 10

y = -15

Step-by-step explanation:

putting value of y in equation 2

2x+(-x-5)=5

2x-x-5=5

x-5=5

x=5+5

x= 10

putting value of x in equation 1

y=-10-5

y= - 15

You might be interested in
PLEASE HELP ME I NEED THIS ASAP
tamaranim1 [39]

Answer:

65

Step-by-step explanation:

13*5=65

13 is a prime number and so is 5

13+5=18

18 is a factor of 36

the answer is 65

6 0
3 years ago
Read 2 more answers
Solve for x in the equation x2 - 12x+ 36 = 90
12345 [234]

Answer:

6 + 3\sqrt{10\\} or 6 - 3\sqrt{10\\}

Step-by-step explanation:

x^2 - 12x + 36 = 90

x^2 - 12x - 54 = 0

x = \frac{-b +/- \sqrt{b^{2} + 4ac }}{2a}

a = 1, b= -12, c= -54

6 + 3\sqrt{10\\} or 6 - 3\sqrt{10\\}

6 0
3 years ago
I need help in these questions
Salsk061 [2.6K]

Answer:

see explanation

Step-by-step explanation:

All of these questions use the external angle theorem, that is

The external angle of a triangle is equal to the sum of the 2 opposite interior angles.

18

∠3 = 43° + 22° = 65°

19

∠2 + 71 = 92 ( subtract 71 from both sides )

∠2 = 21°

20

90 + ∠4 = 123 ( subtract 90 from both sides )

∠4 = 33°

21

2x - 15 + x - 5 = 148

3x - 20 = 148 ( add 20 to both sides )

3x = 168 ( divide both sides by 3 )

x = 56

Hence ∠ABC = x - 5 = 56 - 5 = 51°

22

2x + 27 + 2x - 11 = 100

4x + 16 = 100 ( subtract 16 from both sides )

4x = 84 ( divide both sides by 4 )

x = 21

Hence ∠JKL = 2x - 11 = (2 × 21) - 11 = 42 - 11 = 31°

3 0
3 years ago
What is the simplified form of 1/x^2 divided by 3/x^3
trapecia [35]
1/x^2 / 3/x^3
1/x^2 * x^3/3=x/3
7 0
3 years ago
Which of the following statements are true
Kobotan [32]

Answer:

Step-by-step explanation:

The answer for this is

See the red line in the graph which says f(X)

See the blue line in the graph which says g(X)

So these are the variables which come under the example of exponential functions

And the answer is option B. Both graphs are exponential functions.

5 0
3 years ago
Other questions:
  • If X + 2Y =18 , how am I supposed to find the slope if I don't know how to find the x intercept?
    9·2 answers
  • the segment ABC has these endpoints A: (6,-3) and B (5,5). It is to be partitioned into a 1:4 ratio. Give the cordanate P that w
    13·1 answer
  • Colin meets three wooden boards to repair his porch.the length he needs are 2.2 meters,2.82 meters,and 4.25 meters.he purchases
    14·1 answer
  • Which of the following equations represents a proportional relationship? (There is a Picture) I need the answer ASAP!
    9·1 answer
  • Simplify: 5x+50/x+5 • 1/x+10
    5·2 answers
  • Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.
    8·1 answer
  • Find the distance between the points A(-6,8) and B(12, - 7) by using the distance formula or Pythagorean Theorem. Leave your ans
    6·1 answer
  • Please help. Thank you so much
    5·1 answer
  • 35+35=135<br> True or False
    9·2 answers
  • Please I really need help! I'll give brainliest also!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!