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
Nadya [2.5K]
2 years ago
13

How many TRIANGLES can you find?

Mathematics
1 answer:
Elodia [21]2 years ago
3 0
I found 12 triangles
You might be interested in
Which is the completely factored form of 4x2 28x 49? (x 7)(4x 7) 4(x 7)(x 7) (2x 7)(2x 7) 2(x 7)(x 7)
natima [27]

The completely factored form of 4x^2 + 28x + 49 is given by: Option C: (2x+7)(2x+7)

<h3>How to find the factors of a quadratic expression?</h3>

If the given quadratic expression is of the form ax^2 + bx + c, then its factored form is obtained by two numbers alpha( α ) and beta( β) such that:

b = \alpha + \beta \\ ac =\alpha \times \beta

Then writing b in terms of alpha and beta would help us getting common factors out.

Sometimes, it is not possible to find factors easily, so using the quadratic equation formula can help out without any  trial and error.

For this case, the given quadratic expression is:

4x^2 + 28x + 49

So we've to find two numbers such that:

Their sum = b =  28

Their product = ac = 4\times 49 = 196

We can see that 196 is square of 14, and that 14 added twice forms 28, thus:

14 + 14 = 28

14×14 = 196

Writing b = 28 as sum of 14 twice, we get:

4x^2 + 28x + 49 = 4x^2 + 14x + 14x +49 \\4x^2 + 28x + 49 =  2x(2x+7) + 7(2x + 7)\\4x^2 + 28x + 49  = (2x+7)(2x+7)

Thus, the completely factored form of 4x^2 + 28x + 49 is given by: Option C: (2x+7)(2x+7)

Learn more about factorization of quadratic expression here:

brainly.com/question/26675692

8 0
2 years ago
A.<br> x = 40<br> c.<br> x = 20<br> b.<br> x = 10<br> d.<br> x = 15
velikii [3]

Answer:

B

Step-by-step explanation:

Multiply x/20 each side

6 0
3 years ago
Read 2 more answers
I need to know what X= for all of these please<br><br> Worth 15 points
olga2289 [7]

Answer:

i answered this so you can give the other person brainliest

Step-by-step explanation:

8 0
3 years ago
Help me pls I would really appreciate it
Paul [167]
The first the last and the 2nd last
4 0
3 years ago
Read 2 more answers
Determine if the sequence below is arithmetic or
anzhelika [568]

9514 1404 393

Answer:

  arithmetic; common difference of 5

Step-by-step explanation:

It usually works well to check differences first. Here, they are ...

  8 -3 = 5

  13 -8 = 5

These are the same value, so the sequence is arithmetic with a common difference of 5.

7 0
3 years ago
Other questions:
  • On a map, 1/2 inch represents 4/5 mile. What distance on the map represents 1 mile?
    10·1 answer
  • 3(x+2) -10 = 4x -6 + x solve for y
    5·1 answer
  • HELP ME (for b show work pls thank you!
    13·1 answer
  • 13 Yamini starts a savings account with
    11·1 answer
  • Bethany and her family are attending the Funville Town Fall Festival, and the first thing they do is get in line for the Maize (
    7·1 answer
  • У<br> (6, 10),<br> (а, 8)<br> (4, b)<br> (2, 2)<br> Х
    12·1 answer
  • (13.04 LC)
    11·2 answers
  • A vial contains 20mL of medicine.If each dose is 1/3 of the vial,how many mL is each dose.Express your answer as a decimal
    6·1 answer
  • Solve for X <br> Please help
    7·1 answer
  • Ment in
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!