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
vaieri [72.5K]
3 years ago
9

Solve the following system of equations and show all work. y = -x^2 + 4 y = 2x + 1

Mathematics
1 answer:
Pavel [41]3 years ago
8 0
-x^2 + 4 = 2x + 1
-x^2 - 2x + 4 - 1 = 0
-x^2 - 2x + 3 = 0
(x + 3)(-x + 1)= 0

x + 3 = 0           -x + 1 = 0
x = -3                -x = -1
                          x = 1

so x = -3 and x = 1
You might be interested in
Drew's van is 200 centimeters tall. The height limit for a bridge is 3
horrorfan [7]

Answer:

1. 100cm

2. 300.1cm

3. 200cm

4. 400cm

5. 299.00cm

Step-by-step explanation:

300-200=100

300+0.01=301

300-100=200

300+100=400

300-0.01=299.99

4 0
3 years ago
Lines a,b,c, and d are in the same plane. Line a is parallel to line c. Lines b and c are perpendicular to line d. Based on this
Kaylis [27]
Line A and B is perpendicular
4 0
3 years ago
Read 2 more answers
Samantha's notebook has 14 pages more than three times as much as Lisa's notebook. If Samantha's notebook has 260 pages , how ma
Sever21 [200]
Your answer is  B.82                                             
4 0
3 years ago
Read 2 more answers
Make a table of values and create a line of best fit
Anni [7]
<h2>Explanation:</h2><h2></h2>

Hello! remember you have to write complete questions in order to get good and exact answers. Here I'll explain this in a general way assuming the following table:

\begin{array}{cc}x & y\\0 & 0\\1 & 2\\2 & 4\\3 & 6\\4 & 8\\5 & 10\end{array}

As you can see, x increases in steps of 1 units. So let's check the difference in y:

\bullet \ \text{From x=0 to x=1} \\ \\ \Delta y=2-0=2 \\ \\ \\ \bullet \ \text{From x=1 to x=2} \\ \\ \Delta y=4-2=2 \\ \\ \\ \bullet \ \text{From x=2 to x=3} \\ \\ \Delta y=6-4=2 \\ \\ \\ \bullet \ \text{From x=3 to x=4} \\ \\ \Delta y=8-6=2 \\ \\ \\ \bullet \ \text{From x=4 to x=5} \\ \\ \Delta y=10-8=2

So we have a constant difference and we can conclude the table represents a line. Since the line passes through then y is directly proportional to x, so we can write:

y=kx \\ \\ Where: \\ \\ k \ is \ constant \ of \ proportionality \ or \ the \ slope

Then:

k=\frac{2-0}{1-0}=2

Finally, the equation of the line is:

\boxed{y=2x}

4 0
3 years ago
If y = -2, what is the value of x? x+2/3 ; x =
Bas_tet [7]

Answer:

26

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
Other questions:
  • Write the number in standard and expanded form. 304,800,400
    11·1 answer
  • What would the answer be?​
    13·1 answer
  • The midpoint of line AC is
    10·1 answer
  • PLSSSS PLSSS HELPPPP MEEEEE ASAPPPPP I WILLLLL GIVE BRAINLIEST!!!!!!!
    11·1 answer
  • Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=10
    12·1 answer
  • Hi, can someone please solve this question a put it on a number line to help me out? 0
    10·2 answers
  • An airliner travels 35 miles in 4 minutes. what is its speed in miles per​ hour?
    13·1 answer
  • Evaluate A2 for A = -3. -9 -6 6 9
    10·2 answers
  • Help me with that asap
    8·1 answer
  • Division the following simply your answer​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!