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suter [353]
3 years ago
10

Special right triangles

Mathematics
2 answers:
fiasKO [112]3 years ago
8 0

Answer:

c

Step-by-step explanation:

Anarel [89]3 years ago
6 0

Answer:

D

Step-by-step explanation:

Using the cosine ratio in the right triangle and the exact value

cos30° = \frac{\sqrt{3} }{2} , then

cos30° = \frac{adjacent}{hypotenuse} = \frac{AY}{RY} = \frac{AY}{48} = \frac{\sqrt{3} }{2} ( cross- multiply )

2AY = 48\sqrt{3} ( divide both sides by 2 )

AY = 24\sqrt{3} → D

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Virty [35]
D.
30.008 - 23.17 = 6.838
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3 years ago
#1 what is the population and what is the sample?
klemol [59]

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Formula for 4,9,14 19​
alexira [117]

Answer:

a_{n } = 5n - 1

Step-by-step explanation:

There is a common difference between consecutive terms , that is

9 - 4 = 14 - 9 = 19 - 14 = 5

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a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

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Blow X hold 494 pennies and Bowl Y holds 324 pennie how many pennies should be moved from blow X to bowl Y to make the number of
Tresset [83]

Answer:

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Step-by-step explanation:

6 0
3 years ago
can anyone help me with this ??
Mars2501 [29]

Answer:

A. 336

B. Arranging 3 people in 8 chairs.

C. 42

B. Arranging 2 people in 7 chairs.

Step-by-step explanation:

A.

P(n, r) = P(8, 3)

Formula for Permutation is given as:

P(n, r) = \dfrac{n!}{(n-r)!}

Putting the value of n = 8 and r =3 , we get:

P(8, 3) = \dfrac{8!}{(8-3)!} \\\Rightarrow \dfrac{8\times 7 \times 6 \times 5\times 4 \times 3 \times 2\times 1}{5\times 4 \times 3\times 2\times 1}\\\Rightarrow 8\times 7 \times 6 \\\Rightarrow 336

B. Real world situation for part A:

Arranging 3 people on 8 chairs.

First person has 8 options.

Second person has 7 options.

Third person has 6 options.

C.

P(n, r) = P(7, 2)

Formula for Permutation is given as:

P(n, r) = \dfrac{n!}{(n-r)!}

Putting the value of n = 7 and r = 2 , we get:

P(7, 2) = \dfrac{7!}{(7-2)!} \\\Rightarrow \dfrac{7 \times 6 \times 5\times 4 \times 3 \times 2\times 1}{5\times 4 \times 3\times 2\times 1}\\\Rightarrow 7 \times 6 \\\Rightarrow 42

D.  Real world situation for part AC:

Arranging 2 people on 7 chairs.

First person has 7 options.

Second person has 6 options.

4 0
3 years ago
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