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
LiRa [457]
3 years ago
5

Which value must be added to the expression x2 – 3x to make it a perfect-square trinomial?

Mathematics
1 answer:
Vitek1552 [10]3 years ago
7 0

Answer:

\frac{9}{4}

Step-by-step explanation:

Given

x² - 3x

To make the expression a perfect square

add ( half the coefficient of the x- term )²

x² + 2( - \frac{3}{2} )x + \frac{9}{4}, thus

x² - 3x + \frac{9}{4}

= (x - \frac{3}{2})² ← a perfect square

You might be interested in
Could someone please help me with this? Solution set of lx^2+mx+n=0 is...?
IgorLugansk [536]

Answer:

Simplifying

lx2 + mx + n = 0

Solving

lx2 + mx + n = 0

Solving for variable 'l'.

Move all terms containing l to the left, all other terms to the right.

Add '-1mx' to each side of the equation.

lx2 + mx + -1mx + n = 0 + -1mx

Combine like terms: mx + -1mx = 0

lx2 + 0 + n = 0 + -1mx

lx2 + n = 0 + -1mx

Remove the zero:

lx2 + n = -1mx

Add '-1n' to each side of the equation.

lx2 + n + -1n = -1mx + -1n

Combine like terms: n + -1n = 0

lx2 + 0 = -1mx + -1n

lx2 = -1mx + -1n

Divide each side by 'x2'.

l = -1mx-1 + -1nx-2

Simplifying

l = -1mx-1 + -1nx-2

Step-by-step explanation:

Hope this helped you!

6 0
3 years ago
Quadrilateral ABCD has vertices A(-3, 1) B(0,4) C(4,0) D(1, -3).
Rina8888 [55]
I think the correct answer is D 1,-3
7 0
3 years ago
-4v = -9v + 10 V=<br> Help
Aleksandr-060686 [28]

Answer:

v=2

Step-by-step explanation:

5v=10

v=2

3 0
3 years ago
Which information is necessary to solve this problem?
prohojiy [21]
That would be  400 / 28 =  14.29 gallons to nearest hundredth
3 0
4 years ago
What is the range of this graph ?
Maslowich

Answer:

D. 6

Step-by-step explanation:

Range of any data set is the difference between the maximum value and the minimum value.

From the graph given above, the least data value plotted on the graph is 1.

Minimum value = 1

The maximum data value = 7

The range of the data set = max - min

Range = 7 - 1

Range = 6

7 0
3 years ago
Other questions:
  • 2 2/3 divided by 4<br> help
    13·2 answers
  • If all the dimensions of a cube are are multipied by 5 the surface area of the cube will change by a factor of ten. True or fals
    12·1 answer
  • Find a6: 1, 1/2, 1/6, 1/24, 1/120, a6, 1/5,040, ...
    13·2 answers
  • how many gallons of paint will Marie and Ashton need to paint five of the right triangular prisms that will hold the plant food
    7·1 answer
  • Help PLSSSSS BRAINLIST Rate of change on both of them pls look down below
    14·1 answer
  • How would the number 6,870,000,000,000,000 appear in scientific notation on a calculator screen?a. 6.87E-15 b. 6.87E15 c. 6.87E-
    13·2 answers
  • Answer thanks, show how you got the answer.
    10·1 answer
  • The area of the rectangle on the bottom of this stack is 6 cm2 and the height of the stack is 3 cm. What is the volume of this r
    5·1 answer
  • Please hurry it’s timed place steps in order!! I used pedams but it said it was wrong help!
    7·2 answers
  • I need help with this!​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!