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Romashka [77]
3 years ago
15

Expand (4x-2y)^3 for math final

Mathematics
1 answer:
lisov135 [29]3 years ago
5 0
In general: <span>(a - b)^3 = a^3 - 3 a^2b + 3 a b^2 - b<span>^3
(4x-2y)^3 = </span></span>(4x)^3 - 3 (4x)^2(2y) + 3 (4x) (2y)^2 - (2y)^3
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Y = | x-3 | + | x+2 | - | x-5 | if -2
DaniilM [7]

Step-by-step explanation:

is 0 I think I don't know maybe

8 0
3 years ago
Solve (x – 3)2 = 49. Select the values of x. –46 -4 10 52
Fudgin [204]

Answer: x = 55/2

Step-by-step explanation: (x)(2) (-3)(2) = 49                                                       2x-6+6 = 49+6                                                                                                               2x/2 = 55/2                                                                                                                   x = 55/2

I know that my answer isn't a choice for one of the values of x but that's the result that I got when I solved (x–3)2 = 49.

6 0
3 years ago
How do you write one million, twelve thousand, sixty widgets in standard form
bekas [8.4K]
One million = 1000000
Twelve thousand = 12000
Sixty = 60

One million, twelve thousand and sixty = 1 012 060

Standard form is given by A × 10ⁿ
Where A is a number  in unit and 'n' is an integer

1 012 060 = 1.012060 × 10⁶

4 0
3 years ago
Replace ∗ with a monomial so that the trinomial may be represented by a square of a binomial: 25a^2+ ∗ + 1/4b^2
Nadya [2.5K]
The square of a binomial is a pattern you would do well to remember.
.. (x +y)^2 = x^2 +2xy +y^2

Your expression has x^2 = 25a^2, so x = 5a. It also has y^2 = (b^2)/4, so y = b/2.
then the middle term is
.. 2xy = 2(5a)(b/2) = 5ab

The trinomial is
.. 25a^2 +5ab +(1/4)b^2 = (5a +b/2)^2
7 0
4 years ago
Mr. Thompson drew a rectangle on the chalkboard with a length to width ratio of 5 to 2. He asked students to draw a rectangle wi
Ghella [55]

Answer:

15 centimeters

Step-by-step explanation:

Ratio of Mr. Thompson rectangle = length : width

= 5 : 2

Audrey plans to draw a rectangle with a width of 6 centimeters.

Ratio of Audrey rectangle = length : width

= x centimeters : 6 centimeters

Equate the two ratios to find the value of x

5 : 2 = x : 6

Cross product

5 * 6 = 2 * x

30 = 2x

Divide both sides by 2

x = 30 / 2

= 15

x = 15 centimeters

Audrey's rectangle should have a length of 15 centimeters

5 0
3 years ago
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