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
PLEASE help me with 26 and 27 asap
wariber [46]
They  would all equal to 91..for question 26 and 27 i cont really figure out give me a min
3 0
3 years ago
marc makes $35 pr hour. he works 40 hours per week and gets commison of 15%on his total sales. how much should marc sell to make
Sophie [7]

Answer:

27

Step-by-step explanation:

dollars per hour

4 0
3 years ago
A tennis ball has a diameter of 2.7 inches. What is the approximate volume of the tennis ball
jonny [76]

Answer:

volume = 10.2 in³

Step-by-step explanation:

r = 2.7/2 = 1.35

volume = 4/3πr³ = 4/3(3.14)(1.35³) = 10.2 in³

4 0
2 years ago
The ratio of boys to girls at a day care center is 5 to 4. which of the following cannot be the total number of children at the
EastWind [94]
C: 60 children because 60 cannont go into 9 which is the amount of children in the first ratio
7 0
3 years ago
Triangle ABC is shown below.
Andrew [12]

Answer:

C.) 14

Step-by-step explanation:

Look at the triangle: angles b and c have the same arch, so they are congruent.

In a triangle, if two angles are congruent, then the triangle is isosceles, having two equal sides.

The sides opposite the congruent angles are congruent:

∠B → opposite side → AC

∠C → opposite side → AB

The sides AB and AC are equal. Make an equation:

AB=AC\\\\2x=3x-7

Simplify the equation, solving for x. Add 7 to both sides:

2x+7=3x-7+7\\\\2x+7=3x

Subtract 2x from both sides:

2x-2x+7=3x-2x\\\\7=x

The value of x is 7. Insert the value of x into the given length of AC:

AC=3(7)-7

Simplify multiplication:

AC=21-7

Subtract:

AC=14

Therefore, the length of the line segment AC is 14.

:Done

8 0
3 years ago
Other questions:
  • A sprinkler system inside an officebuilding has 2 types of not-very-reliable activation devices,A1 and A2, which operate indepen
    12·1 answer
  • Katenka cross country skied a trail that was 3/4 mile each way. after skiing 2/3 of the trail she turned around. What fraction o
    11·1 answer
  • Help me please<br> I will mark you B<br><br><br> tysm
    11·2 answers
  • 15b − 15b + 3b − 2b = 8<br><br> What is b?
    10·1 answer
  • Evaluate the expression 9 – 2 when z = 4.
    14·1 answer
  • In a right triangle the length of a hypotenuse is 6 and the length of one leg is 5. Find the length of the other leg,
    12·2 answers
  • X+8(10x+25) how do u solve this
    10·2 answers
  • Just a follow up to my previous question "There is a 20% off sale going on at your local electronic store. The price of an mp3 p
    13·1 answer
  • Kwanzaa is celebrated for 7 days each year. Kwanzaa was celebrated for the first time in 1966. What is the total number of days
    10·1 answer
  • An urn has 6 white balls and 4 orange balls if Sam chooses 5 balls at random from the urn what is the probability that he choose
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!