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KATRIN_1 [288]
4 years ago
6

Expand the expression using the Binomial Theorem and Pascal's Triangle: (3x-1)^3

Mathematics
1 answer:
Readme [11.4K]4 years ago
6 0
(3x)^3+3(3x)^2*-1 +3(3x)(-1)^2+(-1)^3 then simply that down to 27x^3-27x^3+9x-1
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After taking off from the landing pad, a helicopter flies 3 miles west, then 2 miles southeast. How far is the helicopter from t
pashok25 [27]

Answer:

When the plane makes its turn to fly southeast, it makes a 45º angle at point a, making angle abc also equal to 45º.  

Line ab is the 2 miles southeast the plane flies.

Line ac = line cb

sine (45º) = opposite / hypotenuse = cb / 2

.70711 = cb / 2

cb = 1.41422  miles = line ac

Line cs = 3 - 1.41422 = 1.58578

Line x^2 = cs^2 + cb^2

Line x^2 = 2.5146982084  + 2.0000182084

Line x^2 = 4.5147

Line x = 2.1248

Step-by-step explanation:

4 0
3 years ago
How do you solve 1/4x4/7=
Sveta_85 [38]
If you would like to solve 1/4 * 4/7, you can do this using the following steps:

<span>1/4 * 4/7 = (1 * 4) / (4 * 7) = 4/28 = 1/7
</span>
The correct result would be 1/7.
8 0
3 years ago
Read 2 more answers
How many boxes of tissue can you buy with $21 if one box costs $7?
sveta [45]

Answer: 3 boxes

Step-by-step explanation: Divide 21 and 7.

6 0
3 years ago
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2. The density of a liquid is 8.03 X 10-1 kilogram per liter. What is the
Liula [17]

Answer:

m = 80300 kg

Step-by-step explanation:

Data

m = ?

V = 100 000 l

d = 8.03 x 10⁻¹

Formula

d = m/V

clear m from the equation

m = dV

substitute values

m = 8.03 x 10⁻¹ x 100 000 = 80300 kg

6 0
3 years ago
Is this answer correct a=70 b=45 c=45 <br>if its incorrect, what is the actual correct answer?
mafiozo [28]
I do believe your right!
4 0
4 years ago
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