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
GuDViN [60]
3 years ago
5

Mariya is solving the quadratic equation by completing the square.

Mathematics
2 answers:
Lera25 [3.4K]3 years ago
6 0
The value of A is 4 

<span>4x2 – 20x + 3 = 0  
                 -3    -3

4x2 - 20 x = - 3

Pull out common factor which is 4 

4 ( x2 - 5x) = - 3</span>
Alex73 [517]3 years ago
6 0

Answer:

The value of A is 4.

Step-by-step explanation:

Consider the provided quadratic equation.

4x^2-20x+3=0

Subtract 3 from both sides.

4x^2-20x+3-3=-3

4x^2-20x=-3

Now take 4 common from the left side of the above equation.

4(x^2-5x)=-3

Compare the above equation with A(x^2 - 5x) = -3

By the comparison it is clear the value of A is 4.

Hence, the value of A is 4.

You might be interested in
Help pls quick!PLS AND TY
JulsSmile [24]

Answer: 12 Fruit Snacks

Hope this Helps!

6 0
3 years ago
A convertible is traveling at 45 miles per hour, and its wheels have a diameter of 48 inches. How many complete revolutions do t
neonofarm [45]
To answer this question you will need to know how many inches the car travels Per minute.

1. To find this out you will first divide 45 miles by 60 to get the number of miles per minute.

The convertible travels 0.75 mi./min.

2. Next you will convert this number of miles to inches.

There are 63,360 inches per mile.

0.75 x 63360 = 47520 inches per minute.

3. You then need to find the distance the wheel travels in one rotation. You will need to find the circumference of the wheel.

C = pi x d
3.14 x 48
C = 150.72 inches
Each rotation is about 150.72 inches.

4. Finally, divide the total distance traveled in a minute by the circumference(distance of one rotation) to get the total number of rotations in a minute.

47520/150.72 is about 315.3 rotations per minute.



7 0
3 years ago
Read 2 more answers
Write a polynomial function in standard form with zeros at −3, −1, and 1.
Annette [7]

Answer:

f(x) = {x}^{3}  + 3 {x}^{2}  - x -3

Step-by-step explanation:

The given polynomial has zeros at:

x=−3, x=−1, and x=1.

This means that:

x+3, x+1, and x-1 are all factors of this polynomial.

The factored form of this polynomial is :

f(x) = (x + 3)(x + 1)(x - 1)

We expand the last two factors using difference of two squares.

f(x) = (x + 3)( {x}^{2}  - 1)

f(x) = x ( {x}^{2}  - 1) + 3( {x}^{2}  - 1)

f(x) = {x}^{3}  - x+ 3 {x}^{2}  -3

f(x) = {x}^{3}  + 3 {x}^{2}  - x -3

This is the standard form because it is now in decreasing powers of x.

8 0
4 years ago
TRUE OR FALSE: FOR ANY FUNCTION, X=F^-1(Y), THEN Y=F(X). PLEASE EXPLAIN
Vesnalui [34]

Answer:

True.

Step-by-step explanation:

For example let f(x) = 3x + 1  then f-1(x)  is found as follows

Let f(x) = y = 3x + 1 then

3x = y - 1

x = (y-1) / 3

x = f-1(x) = (x - 1)/3.

So:

Replacing the x  in y by (x - 1)/3 :-

x = f(-1)(y) = ( (3x + 1) - 1) / 3

= 3x / 3

= x.

So y = f(x).

7 0
3 years ago
Someone explain I don’t get it
belka [17]

Answer:

neither do I'm stuck on that one

8 0
3 years ago
Other questions:
  • Plz help ill give u brainlist
    14·1 answer
  • Pete is purchasing an mp3 player for 199.90 he gives the sales clerk 2 fifty dollar bills, 4 twenty dollar bills and 4 five doll
    15·1 answer
  • Divide 63 apples into two groups so the ratio is 2 to 1
    8·1 answer
  • Could someone please help me find the domain and range of the equation?...and B-64 a. Please??
    15·1 answer
  • Can someone please simplify these using product notation?
    14·1 answer
  • Beau buys a 3-pound bag of trail mix for a hike. He wants to make one-ounce bags for his friends with whom he is hiking. How man
    6·1 answer
  • What is the answer? can someone help
    11·2 answers
  • Find the perimeter of Triangle ABC.
    10·1 answer
  • What quadrant would the reflection be in?
    10·1 answer
  • Wow I just learned this :) 2-2 is 4 and 4-4 is 2 now I need help with this one whats 8-8=??
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!