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enyata [817]
3 years ago
13

Please help with this question

Mathematics
1 answer:
Kamila [148]3 years ago
7 0

Answer:

3

Step-by-step explanation:

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Factor:<br> 4b2 - 12b + 9
Vikentia [17]

Answer:

  (2b-3)²

Step-by-step explanation:

The square of a binomial is ...

  (p - q)² = p² - 2pq + q²

The fact that the first and last terms are perfect squares suggests that you might want to look to see if the middle term matches this form. It does.

For p² = 4b², p=2b.

For q² = 9, q = 3.

Then 2pq = 2(2b)(3) = 12b.

So, the factoring is ...

  4b² -12b +9 = (2b -3)²

5 0
4 years ago
A rectangular painting is 42 centimeters wide and 51 centimeters long. What is the perimeter of this painting?
Alex
186cm
You add all the sides up, so 42+42+51+51 which equals 186cm
6 0
3 years ago
Please help me quickly (15 points)
sladkih [1.3K]

Answer:

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6 0
3 years ago
I'm really bad at math
Lynna [10]
What chapter is this?

6 0
3 years ago
Find the radius and diameter of circle A, if the endpoints of the radius<br> are (-2, -1) and (6,4).
AleksandrR [38]

Step-by-step explanation:

length \: between \: ( - 2, - 1) \: and \: (6,4) \\  =  \sqrt{(x _{1} - x  _{2} )² + (y _{1}  - y _{2})²  }  \\  =  \sqrt{( -  2 - 6)²+ ( - 1 - 4)²}  \\  =   \sqrt{64 + 25}  \\  =  \sqrt{100}  \\  = 10 \: units \\ radius = 10 \: units \\ diameter = 2 \times radius \\ d = 2 \times 10 \\ d = 20 \: units

8 0
3 years ago
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