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
aliya0001 [1]
3 years ago
8

the line of symmetry of a parabola whose equation is y = ax ^ 2 - 4x + 3 is =-2 what is the value of "a"

Mathematics
1 answer:
77julia77 [94]3 years ago
5 0
Y= ax² -4x +3

-b/2a is x - coordinate of the vertex,
line of symmetry x=-2, x=-2 is a coordinate of the vertex also, because the line symmetry has vertex.

x= -b/2a
x= -2, b= -4
-2=-(-4)/2a
-2=4/2a
-2=2/a
a=2/(-2)=-1
a= - 1 
You might be interested in
Is 3/8 Greater than, less than or equal 7/12
Alborosie

Answer:

3/8 is less then 7/12

Step-by-step explanation:

7 0
3 years ago
Which number is equal to ^^
KATRIN_1 [288]

Answer:

The answer is D. 5000

Step-by-step explanation:

(10)(10)(10)= 1000

1000(5)=5000

6 0
3 years ago
Please help me I’m working on a math test and I’m struggling with this problem: The Aon center in Chicago is one of the worlds t
Nina [5.8K]

Answer:

They are 14.2 feet high each

Step-by-step explanation:

1136/80=14.2

4 0
2 years ago
Read 2 more answers
Will give brainlest
Vilka [71]

Answer:

B. 1 5/6

Step-by-step explanation:

\frac{5}{6}*2\frac{1}{5} = 1\frac{5}{6}

5 0
3 years ago
Read 2 more answers
Write 2.9302 as a fraction and a mixed number​
bonufazy [111]

rationalise 29302/100000

=14651/50000

8 0
3 years ago
Other questions:
  • What is the simplified form of the expression? 1/3(21m 27)
    15·1 answer
  • What is the diameter of this circle?
    11·2 answers
  • Graph the solution set for this inequality -6x-3y<-18
    12·2 answers
  • Randy took out a subsidized student loan of $7,000 at a 3.6% APR, compounded monthly, to pay for his last semester of college. I
    8·1 answer
  • A stack of one hundred twenty cards is placed next to a ruler, and the height of stack is measured to be
    10·1 answer
  • chirstoper bought a new watch at the store when they were having a 20% off sale. if the regular price was $48, how much did chri
    9·2 answers
  • Mathews usually makes the 100 km journey to visit his family. The trip involves three separate stages:
    9·1 answer
  • A rectangular prism has a volume of 80 m3. What is the length of the rectangular
    13·2 answers
  • HELP!!! pls with this question !
    13·1 answer
  • I need help with this !!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!