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liubo4ka [24]
2 years ago
5

PLEASE HELP!!Sin <k=A. 1/2B. (sqrt3)/3C. 2D. 2sqrt3​

Mathematics
1 answer:
algol [13]2 years ago
4 0

Answer:

1/2

Step-by-step explanation:

Sine is opposite over hyp.

So the opp is 5 and the hyp is 10

5/10 equal 1/2

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The access code for a garage door consists of three digits. Each digit can be any number from 1 through 5​, and each digit can b
Papessa [141]

Answer:

(a) 125

(b) \dfrac{1}{125}

(c) \dfrac{124}{125}

Step-by-step explanation:

We are given that access code consists of 3 digits.

Each digit can be any digit through 1 to 5 and can be repeated.

Now, this problem is equivalent to the problem that we have to find:

The number of 3 digit numbers that can be formed using the digits 1 to 5 with repetition allowed.

(a) We have 3 places here, unit's, ten's and hundred's places respectively and  each of the 3 places have 5 possibilities (any digit allowed with repetition).

So, total number of access codes possible:

5\times 5 \times 5 = 125

(b) Suppose, an access code is randomly selected, what is the probability that it will be correct.

Formula for probability of an event E can be observed as:

P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}

Here, only 1 code is correct, so

Number of favorable cases = 1

Total number of cases = 125

So, required probability:

P(E) = \dfrac{1}{125}

(c) Probability of not selecting the correct access code on first time:

P(\overline E) = 1-P(E)\\\Rightarrow P(\overline E) = 1-\dfrac{1}{125}\\\Rightarrow P(\overline E) = \dfrac{125-1}{125}\\\Rightarrow P(\overline E) = \dfrac{124}{125}

So, the answers are:

(a) 125

(b) \dfrac{1}{125}

(c) \dfrac{124}{125}

7 0
3 years ago
SOMEONE PLS HELP ME WITH THIS
jolli1 [7]

Answer:

x = 11.25

Step-by-step explanation:

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Add 15 to both sides;

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Divide both sides by 0.8;

x = 11.25

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Step-by-step explanation:

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It goes as 1.875. Hope this helped you :)))
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il63 [147K]

Answer:

0

Step-by-step explanation:

You can't make 0.2 as a whole number so we can round it to the nearest whole number, 0.

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