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Akimi4 [234]
3 years ago
6

9. What is the coefficient of y^2? in the expansion of (x + y)^2??

Mathematics
1 answer:
klemol [59]3 years ago
3 0

Answer:

The coefficient of y² will be 1, which we can see when we expand the expression:

(x + y)²

= (x +y)(x + y)

= x² + xy + xy + y²

= x² + 2xy + y²

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I NEED HELPPP PLEASE
Tanzania [10]

Answer:

252 cubic cm

Step-by-step explanation:

V = (l x w x h ) / 3

V = (6 cm x 9 cm x 14cm) / 3

V = 756/3 =  252 cubic cm

8 0
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3. Write out the prime factor of the following numbers.<br> a. 15<br> b. 21<br> C. 38<br> d. 42
Minchanka [31]

Answer:

The prime factors of 15 are: 1,3,5,15

The prime factors of 21 are: 1,3,7,21

The prime factors of 38 are: 1,3,13,39

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6 0
3 years ago
Simplify the following fraction by putting it in lowest terms or by performing the indicated operation.
netineya [11]
(2x-1)(2x-1)
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2x-1
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8 0
2 years ago
A cube-shaped water tank having 6 ft side lengths is being filled with water. The bottom is solid metal but the sides of the tan
Mekhanik [1.2K]

Answer:

0.033 ft

Step-by-step explanation:

Let g = 32.2 ft/s2 and h be the maximum height that water can be filled before the sides shatter.

Pressure is distributed from 0 to maximum at the bottom like the following equation:

P = \rho gh

So the force generated by water pressure on the side of the tank is

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where s = 6ft is the side length of the tank. This force cannot be larger than 200lb

\rho ghs/2 \leq 200

62.4*32.2*h*6/2 \leq 200

h \leq 0.033 ft

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3 years ago
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