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
dalvyx [7]
3 years ago
6

What value of c makes the trinomial below a perfect square x2 + 7x + c?

Mathematics
2 answers:
Daniel [21]3 years ago
5 0
We have that
x²<span> + 7x + c
</span><span>Group terms that contain the same variable
</span>(x² + 7x )+ c
<span>Complete the square. Remember to balance the equation 
</span>(x² + 7x+3.5² )+ c-3.5²

Rewrite as perfect squares

(x+3.5)²+ c-3.5²
so
c-3.5² must be zero
c-3.5²=0------- c=3.5²------> c=12.25

the answer is
the value of c must be 12.25

STatiana [176]3 years ago
5 0

Answer:49/4

Step-by-step explanation:

You might be interested in
Suggest five questions for a questionnaire to discover what opinions people in class have about school.
Snezhnost [94]

Answer:

Which activities in the classroom do you enjoy the most? ...

Given a chance, what is one change that you would like to see? ...

Do you have supportive classmates? ...

What motivates you to learn more? ...

Do you think that the school provides you with adequate sports facilities?

How much time do you spend on homework every night?

Which classroom activities do you learn from the most?

What are three things that can improve the class most?

8 0
3 years ago
What is the difference of 35- (-8)
Dennis_Churaev [7]

35-(-8)=35+8=43

~~~~~~~~

6 0
3 years ago
Read 2 more answers
624/50<br> please help will give Brainliest!
natulia [17]
The answer is 12.48 hope this helps!
3 0
3 years ago
Read 2 more answers
Is x=15 a function?​
Mama L [17]

Answer:

yes i do believe so

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which statement is true about the prime polynomial 2x2 + 3x + 3?
dedylja [7]

Answer:

It cannot be modeled with a rectangle.

Step-by-step explanation:

The given expression 2x^2 + 3x +3 cannot be factored.

That means that it cannot be modeled with a rectangle.

So your answer is, It cannot be modeled with a rectangle.

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of the product (4 – 2i)(6 + 2i)? 20 – 4i 20 + 16i 28 + 16i 28 – 4i
    14·2 answers
  • Jon invests $4,100 into an account that pays 5 percent simple interest each year. What is the total balance in the account after
    11·2 answers
  • PLZ HELP! I have no idea how to do this
    11·1 answer
  • In the right triangle shown, m∠A=30°m, AB = 12\sqrt{3}AB=12 <br> How long is AC?
    7·1 answer
  • Consider the following function. f(x) = 2x3 + 9x2 − 24x (a) Find the critical numbers of f. (Enter your answers as a comma-separ
    14·1 answer
  • ILL GIVE BRAILIEST JUST ANSWER IT RIGHT
    15·1 answer
  • Suppose you work in a clothing store. Each week you earn $250 plus a commission equal to 2.5% of your sales. This week your goal
    12·1 answer
  • Simplify the expression— 2.7(w-5.2)
    12·2 answers
  • The Kennedy Middle School football team won 60% of their games this year. If they won 9 games, how many did they play?
    11·2 answers
  • What is the area of this figure? 4 cm 5cm 5cm Enter your answer in the box. cm? ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!