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
tensa zangetsu [6.8K]
2 years ago
15

How do you find the missing number of a perfect square trinomial? 25x^2 - 60x + ___

Mathematics
1 answer:
Harrizon [31]2 years ago
4 0

Answer:

  36

Step-by-step explanation:

Compare what you have to the square ...

  (a +b)^2 = a^2 +2ab +b^2

Your "a" is √(25x^2) = 5x

Your "2ab" is -60x. Since you know "a", you can find "b".

  2ab = -60x

  2(5x)b = -60x . . . . . . . substitute for "a"

  b = -60x/(10x) = -6

Then the missing term is b^2 = (-6)^2 = 36.

Your trinomial is ...

  25x^2 -60x +<u>36</u>

You might be interested in
Item 18
nasty-shy [4]

The first thing we have to do is to calculate the midpoint of the min and max speeds. We are given that the min and max is 74 and 95 respectively. The midpoint is then calculated as (max+min) / 2. Therefore:

midpoint = (74 + 95) / 2 = 84.5

 

Next, we calculate the distance from the midpoint to the endpoint by doing subtraction. Therefore:

min endpoint: 84.5 – 74 = 10.5

max endpoint: 95 – 84.5 = 10.5

 

Now we know that v minus the midpoint will equal the distance such that:

| v - midpoint | = distance.

To our problem,

| v – 84.5 | = 10.5

7 0
3 years ago
Hi can you make the numbers
elena-14-01-66 [18.8K]
For 44
7x2=14
14+8=22
22x2=44
Is this ok, I hope I helped :)
4 0
3 years ago
A number is added to the square of itself and the result is 90. Find all possible values for the number
kolezko [41]

Answer: 9

Step-by-step explanation: 9 x 9 equals 81 and 81 add 9 is 90

6 0
3 years ago
Can anybody please help solving this problem?
pantera1 [17]
Area of the shaded region = Area <span>of a square - Area of a circle
</span>
Side of a square = 2r
Area of a square = (2r)² = 4r²

Area of a circle = πr²

Area of the shaded region = 4r² - πr² = <span>r²(4-π)</span>
7 0
3 years ago
Anybody know this? I’m not sure how to do it at all.
Crazy boy [7]
2 is 42 but i’m not sure about one
5 0
2 years ago
Read 2 more answers
Other questions:
  • How many solutions does the following system have? 3x+2y=1 -9x-6y=3
    14·2 answers
  • Noel bought a 10 ounce box of cereal for $1.63 What was the cost per ounce?
    11·1 answer
  • what is the highest number in the world and what is the lowest number in the world explain your answer
    15·1 answer
  • 11. Write the equation of the line in slope-intercept form that is parallel to the line y = - 4x + 2 and
    15·1 answer
  • The results of a survey of 43 students and the foreign language they are studying are shown in the two-way frequency table.
    9·1 answer
  • Jake is comparing the prices of two laundry service companies. Company A charges $20 per load and an additional $8 as service ch
    12·1 answer
  • Please show you work Thankyou :)
    13·1 answer
  • If the center of a circle is at (3,-6) and the diameter is 10 units, what is the equation for the circle
    7·1 answer
  • Please help will give brainliest
    15·2 answers
  • You can use a calculator
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!