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elena55 [62]
3 years ago
10

Find the value of each expression. Show your work. 10^C^4

Mathematics
1 answer:
ch4aika [34]3 years ago
6 0
_nC_r = \frac{n!}{(n - r)!r!}
<span>_1_0C_4 = \frac{10!}{(10 - 4)!4!}
</span>_1_0C_4 = \frac{10!}{6!4!}
_1_0C_4 = \frac{10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1}{6 * 5 * 4 * 3 * 2 * 1 * 4 * 3 * 2 * 1}
_1_0C_4 = \frac{10 * 9 * 8 * 7}{4 * 3 * 2 * 1}
_1_0C_4 = \frac{90 * 56}{12 * 2}
_1_0C_4 = \frac{5040}{24}
_1_0C_4 = 210
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the cost of plastering a wall of a room having length 8m and heights 4m at Rs 15 per m² is Rs 1560 . find the cost of carpeting
Effectus [21]

Step-by-step explanation:

here ,

length = 8m

height=4m

Rate of plastering 4 walls = 15/m^2

Cost of plastering 4 wall = Rs 1560

Area of floor = Cost of plastering / Rate of plastering

= 1560/15

= 104

again,

Area of four wall = 2h(l+b)

or, 104= 2×4(8+b)

or, 104 =8(8+b)

or, 104/8=8+ b

or,13 - 8= b

or, b= 5

again,

Area of floor= l×b

= 8×5

= 40

again,

Rate of carpeting the floor= 300/ m^2

Area of floor = 40 m^2

cost of carpeting=Rate × Area

= 300×40

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4 0
3 years ago
Any large random sample from a group of people will be representative of the entire group.true false
ddd [48]

Answer:

true

Step-by-step explanation:

7 0
2 years ago
The triangle has size with the lengths of 3 cm 13 cm and 14 cm Is it a right triangle?
WITCHER [35]

Answer:

No, it is not a right triangle

Step-by-step explanation:

Let H = 14 cm

B = 3 cm

P = 13 cm

According to pythagoras theorem:

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196 = 169 + 9

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6 0
3 years ago
What is the seventh multiple of 4 answer for brainiest
qwelly [4]

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3 0
2 years ago
Read 2 more answers
47. The legs of a triangle measure 7 mm and 24 mm. What length hypotenuse makes the triangle a right triangle?
k0ka [10]

Answer:

B

Step-by-step explanation:

according to pythagorean

7^{2} + 24^{2} =x^{2} (x>0)

=> x^{2} =625

=>x=\sqrt{625} = 25

6 0
2 years ago
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