3 years ago

Please help with this question

Mathematics

1 answer:

Kamila [148]3 years ago

7 0

Answer:

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

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3 years ago

Please help me quickly (15 points)

sladkih [1.3K]

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3 years ago

I'm really bad at math

Lynna [10]

What chapter is this?

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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