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
EleoNora [17]
3 years ago
6

Find c to complete the perfect trinomial x2 + 4x + c

Mathematics
1 answer:
sladkih [1.3K]3 years ago
8 0

Answer:

4

Step-by-step explanation:

I assume that is supposed to be x squared. A perfect trinomial is the product of a perfect square, (x times a number) squared. With these trinomials, you can look at them as: ax squared times bx + c. When a is 1, the fastest way to get c to make a perfect square is to divide b by 2. In this case, it's 4/2 = 2. The last step is to square that number. 2 squared = 4.

You might be interested in
What is (12 − 4) − (6 ÷ 2) − (2 x 2) =
Tanya [424]

Answer:

1

Step-by-step explanation:

(12-4) - (6/2) - (2 x 2)

(8) - (3) - (4)

1

First you solve the expressions in the perenthesis, then solve the final part

Hope this helps!

:)

5 0
2 years ago
Please help me with this
shusha [124]

Answer:

The one one the left is 1/2 , the one on the right is 8/25

Step-by-step explanation:

5 0
2 years ago
10 to 15 simplified
pashok25 [27]
2/3
Divide the numerator and denominator by their gcd which is 5
4 0
3 years ago
Read 2 more answers
The diagonal of a TV set is 13 inches long. It’s length is 7 inches more than the height. Find the dimensions of the TV set.
alukav5142 [94]

Answer: The length is 12 inches while the height is 5 inches

Step-by-step explanation: It the Television has a diagonal of 13 inches, and a height of H inches, then the length would be (H + 7) inches. It’s length is 7 inches more than the height. At this point we can draw up a right angled triangle with the hypotenuse as 13 (diagonal side) and the other two sides as H and (H + 7)

Then we can apply the Pythagoras theorem which states that

AC^2 = AB^2 + BC^2

(Where AC is the hypotenuse and AB and BC are the two other sides)

Hence,

13^2 = H^2 + (H + 7)^2

169 = H^2 + (H^2 + 14H + 49)

169 = 2H^2 + 14H + 49

By collecting like terms we now have

169 - 49 = 2H^2 + 14H

120 = 2H^2 + 14H

By re-arranging all terms on one side of the equation, we arrive at

2H^2 + 14H - 120 = 0

Divide all sides by 2

H^2 + 7H - 60 = 0

To solve the quadratic equation, we now factorize and we have,

H^2 + 12H - 5H - 60 = 0

(H + 12) (H - 5) = 0

Therefore

Either H + 12 = 0 OR

H - 5 = 0

Hence, Either H = -12 or H = 5

The dimension can not be a negative value so we shall take h equals 5.

Having calculated the height of the television as 5 inches, the length which was given as H + 7 can now be calculated as

Length = H + 7

Length = 5 + 7

Length = 12

Therefore, the length of the Television is 12 inches and the height is 5 inches

4 0
3 years ago
The invitations to a holiday party cost a total of $31.50 if each invitation cost $0.75 cents how many invitations were sent out
babunello [35]

Answer:

42

Step-by-step explanation:

divide the total by the cost of each invite

6 0
2 years ago
Other questions:
  • The sum of the measures of the angles of a triangle is 180. The sum of the measures of the second and third angles is three time
    14·1 answer
  • Baileys rectangular dog pen for his Irish setter must have an area of 300 square feet. Also, the length must be 10 feet longer t
    10·1 answer
  • 11. <br>2(9x + 15)- 2(8 + 2x) <br><br>12.<br>(7x - 12) - 2(3x + 10) <br><br>Help pls
    10·1 answer
  • Write an equation for the translation of x ^ 2 + y ^ 2 = 25 by 6 units left and 3 units down.
    11·2 answers
  • Inverse function of exponential function
    11·1 answer
  • A tailor pays $10.25 per yard for wool and pays $5.75 per yard for cotton. He bought 4.8 yards of cotton and spent a total of $8
    13·1 answer
  • The measure of two complementary angles are in the ratio 1 : 5. What are the degree measures of the two angles? What is the solu
    13·2 answers
  • How to do question 22?
    7·1 answer
  • What adds up to 11 and multiples to -60?
    14·1 answer
  • Ambwene cut 3 lawns in his neighborhood on Friday and more on Saturday,
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!