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
nalin [4]
3 years ago
14

can someone help me!! Use algebraic rules of equations to predict the solution type to the system of equations. Include all of y

our work for full credit. \(f(x) = \left\{ x+y=-4 y=2x-1 \right.\)

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
4 0

Answer:

x + y = 4 Equation 1

y = 2x -1 Equation 2

-2x + y = -1

x + y = 4

Subtract

You will get

- 3x = -5

Divide by -3

-3x / -3 = - 5 /-3

x = 5/3

Substitute x into equation 1

x + y = 4

x = 5/3

5/3 + y = 4

y = 4 - 5/3

y = 7/3

x = 5/3 y = 7/3

Hope this helps.

You might be interested in
In a pizza takeout restaurant, the following probability distribution was obtained for the number of toppings ordered on a large
Elis [28]

Answer:

The random variable (number of toppings ordered on a large pizza) has a mean of 1.14 and a standard deviation of 1.04.

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>The probability distribution is:</em>

<em>x   P(x) </em>

<em> 0   0.30 </em>

<em>1    0.40 </em>

<em>2   0.20 </em>

<em>3   0.06 </em>

<em>4   0.04</em>

The mean can be calculated as:

M=\sum p_iX_i=0.3\cdot 0+0.4\cdot 1+0.2\cdot 2+0.06\cdot 3+0.04\cdot 4\\\\M=0+0.4+0.4+0.18+0.16\\\\M=1.14

(pi is the probability of each class, Xi is the number of topping in each class)

The standard deviation is calculated as:

s=\sqrt{\sum p_i(X_i-M)^2}\\\\s=\sqrt{0.3(0-1.14)^2+0.4(1-1.14)^2+0.2(2-1.14)^2+0.06(3-1.14)^2+0.04(4-1.14)^2}\\\\s=\sqrt{0.3(-1.14)^2+0.4(-0.14)^2+0.2(0.86)^2+0.06(1.86)^2+0.04(2.86)^2}\\\\ s=\sqrt{0.3(1.2996)+0.4(0.0196)+0.2(0.7396)+0.06(3.4596)+0.04(8.1796)}\\\\s=\sqrt{0.3899+0.0078+0.1479+0.2076+0.3272}\\\\ s=\sqrt{ 1.0804 }\\\\s\approx 1.04

3 0
2 years ago
Can you find the missing angle measurements
yarga [219]
Here is the answer for the question

6 0
3 years ago
Read 2 more answers
What is the slope of the line? pls help
Flauer [41]

Answer:Rise= 4 Run= 5

Step-by-step explanation:

You have to do Rise over Run. You have to find two of the points and count going up and right.

3 0
2 years ago
What is 2(3p – t) – (–4p + t)?
sweet [91]
What the other person said
6 0
3 years ago
Read 2 more answers
Hey guys,<br><br> Do you guys know the answer to this TTM problem?<br><br> Thank You!
tensa zangetsu [6.8K]
I think it is 2.5,2.5
4 0
3 years ago
Other questions:
  • Janice thinks that 20 hundredths is equivalent to 2 thousandths because 20 hundreds is equal to 2 thousands. Use words and a pla
    11·2 answers
  • Five kites were flying in the sky. Each kite was flying at a different level. The red kite was flying higher than the green one.
    12·2 answers
  • Part D
    9·1 answer
  • How do you round 3842532 to the nearest 1000
    9·1 answer
  • WILL MARK BRAINLIEST <br> ASAP!!!!!!!!!
    13·1 answer
  • Drag a number into each line to create an equation that is true for all values of x
    12·1 answer
  • Multiple choice!!!!!!!!!!!!!!!!!!
    9·2 answers
  • What is the length of the focal width x=-1/8y^2
    12·2 answers
  • True or false if the line y=2 is horizontal asymptote of y=f(x), then f is not defined at y=2
    11·1 answer
  • Please help me, I don't know how to solve it
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!