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3 years ago

Please take this points

Mathematics

2 answers:

galina1969 [7]3 years ago

7 0

Thanks siishshskaosidbbdjsoa

MissTica3 years ago

4 0

Thank you I would love to accept this great present and gift from you king

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What percent of 24 is 6

VMariaS [17]

To find what percent a part is of the whole, divide the part by the whole and multiply by 100.

percent = part/whole * 100%

percent = 6/24 * 100%

percent = 0.25 * 100%

percent = 25%

Answer: 25%

4 0

3 years ago

Read 2 more answers

Help with this question, please!! I need serious help on this question!

Kipish [7]

Answer:

$\large\boxed{d_2=15\ cm}$

Step-by-step explanation:

The formula of an area of a kite:

$A=\dfrac{d_1d_2}{2}$

d₁, d₂ - diagonals

We have A = 120 cm² and d₁ = 16 cm. Substitute:

$\dfrac{16d_2}{2}=120$

$8d_2=120$ <em>divide both sides by 8</em>

$d_2=15\ cm$

4 0

3 years ago

A multiple choice exam has ten questions. Each question has five possible answers, of which one is correct. Suppose that a stude

Ber [7]

Answer:

8.81% probability that the student answers exactly 4 questions correctly

Step-by-step explanation:

For each question, there are only two possible outcomes. Either he answers it correctly, or he does not. The probability of answering a question correctly is independent of other questions. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

A multiple choice exam has ten questions.

This means that $n = 10$

The probability of answering any question correctly is 0.20.

This means that $p = 0.2$

What is the probability that the student answers exactly 4 questions correctly

This is P(X = 4).

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 4) = C_{10,4}.(0.2)^{4}.(0.8)^{6} = 0.0881$

8.81% probability that the student answers exactly 4 questions correctly

4 0

4 years ago

What are the values of x and y?

tresset_1 [31]

Step-by-step explanation:

y is easy.

it is the Hypotenuse (baseline) of the small right-angled triangle created by the height (8) of the main triangle, the segment 6 of the main Hypotenuse and y.

so, Pythagoras :

y² = 8² + 6² = 64 + 36 = 100

y = 10

x is a bit more complex.

I think the easiest way to get it is to know that the height of a right-angled triangle to the Hypotenuse is the square root of the product of both segments of the Hypotenuse.

so, if we call the segments of the Hypotenuse a and b with a = 6, we have

x = a + b = 6 + b

height (8) = sqrt(a×b) = sqrt(6b)

therefore,

6b = height² = 8² = 64

b = 64/6 = 32/3 = 10 2/3 = 10.66666666...

so,

x = 6 + 10.66666... = 16.666666666...

round it to what is needed. e.g. 2 positions after the decimal point (hundredths) ? then it would be 10.67

6 0

3 years ago

What is 2√20 - 4√45 + 7√12 in simplest radical form? Show your work!