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
schepotkina [342]
3 years ago
13

What are the x intercepts of the quadratic function? Y=-x^2+2x-1

Mathematics
1 answer:
saw5 [17]3 years ago
8 0

Answer:

x = 1

Step-by-step explanation:

Given in the question the equation

y = -x² + 2x - 1

To find the x-intercept, substitute in 0 for y

0 = -x² + 2x - 1

To find value of x use quadratic equation

x = -b ± √b²-4ac / 2a

  here a = -1

           b = 2

           c = -1

x1 = -2 + √2²-4(-1)(-1) / 2(-1)

   = -2 + 0 / -2

   = -2 / -2

   = 1

x2 = -2 - √2²-4(-1)(-1) / 2(-1)

   = -2 - 0 / -2

   = -2 / -2

   = 1

You might be interested in
When looking at a graph, explain how you would know two variables were not proportional.
Misha Larkins [42]

Answer:

a straight line that does not go through the origin.

3 0
2 years ago
What is the slope-intercept form of the equation of the line that contains the points (3, 8) and (6,5) ?
Rashid [163]
The answer is y=-1x +11
4 0
3 years ago
The graph shows the speed of a vehicle during the final 50 seconds of a journey
Sedaia [141]
ラタさたらアサアタラアヤタアラいらタサタラ田原田畑ら浅田はやちらたさたら畑らは新たさたらあらあら野菜やるハアラある派を田畑さあらたさたら田畑さたはあさはあラカさたら昌太や沙耶羽田にあやさまらま火たださはあたらださいなたら田畑佐原タラ浅井さん羽田あはあさた
3 0
2 years ago
Mrs. Bendit’s 1st Block class has 28 students. There are 7 girls in the class. What percent of boys are in the class?
Gemiola [76]

Answer:

Boys: 75%

Girls: 25%

Step-by-step explanation:

Total: 28 Students: 100%

7 Girls in clas

28(total)-7 (girls)= 21 Boys in class

__________________

If we divide the amount  boys OR girls ( depending on which gender) after the toal and move the decimal to the right twice after dividing) we will get our answer.

Formula:

(Amount of Boy or girls) = x

X/28

So since we are trying to get the percentages of boys, we will replace X with the amount of boys

21/28 = .75 ( then move the decimal to the right TWICE) =  75  

Then you should get your percentages: 75%  Also if your lookings for girls percentages, you basically subtract 75 ( boys percentages) with the total percentages ( 100) then you should get your answer for the girls: 25%

7 0
2 years ago
Read 2 more answers
Which fraction (in simplest form) is equivalent to 0.03?<br> A.3/100<br> B.3/10<br> C.1/3<br> D.1/30
bija089 [108]
It is (A). When removing decimal of 0.03 you will get = 3/100 so A is the correct answer.
3 0
3 years ago
Other questions:
  • What is y-2=-2(x-3) In slope intercept form
    7·1 answer
  • If cardboard costs $0.05 per square inch, how much would it cost to make a box with a surface area of 384 sq inch? How would you
    15·2 answers
  • PLEASEEE HELP ME ILL GIVE BRAINLIEST TO FIRST PERSON WHO ANSWERS
    13·1 answer
  • I need help with this question.
    7·1 answer
  • PLEASE HELP! i will give brainliest
    8·1 answer
  • An accountant gets paid $150 for each tax return she prepares and her goal is to earn $6,750 preparing tax returns during this t
    15·1 answer
  • Can sb pls solve this?​
    7·1 answer
  • I have a quiz tomorrow so put anything that will make us friends and you better be smart haha
    9·2 answers
  • A pair of running shoes cost 60.00. The sales tax is 3%. How much is sales tax?
    11·2 answers
  • Which of the following ratios is equivalent to 3:4?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!