Answer:
65625/4(x^5)(y²)
Step-by-step explanation:
Using binomial expansion
Formula: (n k) (a^k)(b ^(n-k))
Where (n k) represents n combination of k (nCk)
From the question k = 5 (i.e. 5th term)
n = 7 (power of expression)
a = 5x
b = -y/2
....................
Solving nCk
n = 7
k = 5
nCk = 7C5
= 7!/(5!2!) ------ Expand Expression
=7 * 6 * 5! /(5! * 2*1)
= 7*6/2
= 21 ------
.........................
Solving (a^k) (b^(n-k))
a = 5x
b = -y/2
k = 5
n = 7
Substituting these values in the expression
(5x)^5 * (-y/2)^(7-5)
= (3125x^5) * (-y/2)²
= 3125x^5 * y²/4
= (3125x^5)(y²)/4
------------------------------------
Multiplying the two expression above
21 * (3125x^5)(y²)/4
= 65625/4(x^5)(y²)
Answer:
The answer is number 2. As he ran he could hear the "Plop! Plopl" of the oobleck on the windowpanes. It was pelting against the palace walls as big as greenish cup-cakes now!
Step-by-step explanation:
Plop! Plop! is an onomatopoeia because it expresses a sound that is made.
Answer:
the answer is A.) or (3 and one-half, negative 4)
Answer:
66 minutes
Step-by-step explanation:
<u>Solve for speed</u>
speed = distance / time
speed = 6 / 44
<u>Substitute in speed to second equation and solve for time</u>
distance / speed = time
9 / (6/44) = time
66 = time taken