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
What part of the story does this portion of the graph represent?
NeX [460]

Answer:

Step-by-step explanation:

Area of the Velocity-Time graph gives the displacement of the motion .

3 0
3 years ago
Find the perimeter of the following square.
myrzilka [38]

Answer:

D

Step-by-step explanation:

the perimeter of a shape is the sum of it's sides

in a square all sides have the same length

here all sides are 1 inch

so 1+1+1+1 = 4 inches which is D

6 0
3 years ago
An opinion poll surveyed 900 people and reported that 36% believe a certain governor broke campaign financing laws in his electi
Anuta_ua [19.1K]

Answer:

The confidence Interval = (0.329, 0.391)

Step-by-step explanation:

Formula for the Confidence Interval for proportion =

p ± z × √p(1 - p)/n

where

p = x/n

From the question

n = 900 people

x = 36% of 900 people

= 36/100 × 900

= 324

z = z score of 95% confidence Interval

z = 1.98

p = x/n

= 324/900

= 0.36

Confidence Interval = p ± z × √p(1 - p)/n

= 0.36 ± 1.96 × √0.36 (1 - 0.36)/900

= 0.36 ± 1.96 ×√0.36 (0.64)/900

= 0.36 ± 1.96 × √0.000256

= 0.36 ± 1.96 × 0.016

= 0.36 ± 0.03136

Confidence Interval = 0.36 ± 0.03136

= 0.36 - 0.03136

= 0.32864

Approximately to 3 decimal places = 0.329

= 0.36 + 0.03136

= 0.39136

Approximately to 3 decimal places = 0.391

Therefore, the 95% confidence interval for the population proportion of people who believe the governor broke campaign financing laws = (0.329, 0.391)

7 0
3 years ago
Which of the following is true about a nonlinear function?
Mila [183]
It is not straight and does not always pass through 0,0
so A, C, and D are incorrect.

Look up nonlinear function, and it shows a curved line.

The answer is B. It can be curved.
8 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through the point (-6,-8) and has a slope of 1/3​
Arturiano [62]

y + 8 = 1/3 (x+6)

With the given information, we can use the point-slope formula, , to write the equation of the line. Substitute values for the  , , and  in the formula to do so.

The  represents the slope, so substitute  in its place. The  and  represent the x and y values of one point the line intersects, so substitute -6 for  and -8 for . This gives the following answer and equation (just make sure to convert the double negatives into positives:  

8 0
2 years ago
Other questions:
  • Question 7 Multiple Choice Worth 1 points)
    7·1 answer
  • A toy previously sold for $10.00 now sells for 75 cents. Calculate the decrease in the value of the toy
    15·1 answer
  • what is the slope of the line below is -5. which of the following is the point-slope form of the line (2,-1)​
    8·2 answers
  • How much can 0.75 go into 4.5
    7·2 answers
  • Which of the following is an equation of the line through (-4, 12) parallel to the line y= - 4x - 4?
    12·1 answer
  • PLS SOLVE RIGHT NOW WILL GIVE BRAINIEST 5 STARS AND THANKS<br> 3 1/8 ÷(x−4 7/28 )= 17/18 +1 5/6
    12·1 answer
  • According to the scatter plot shown, what approximate income should a 24-year old have?
    5·1 answer
  • Which ordered pair could be removed from the graph to create a set of ordered pairs that represents a function?
    15·1 answer
  • Find the 75th term of the arithmetic sequence -17,-13,-9
    7·1 answer
  • What is the 6th term of the sequence?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!