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Kay [80]
3 years ago
5

Help meh asap Write a verbal expression for 4(n + 6)

Mathematics
2 answers:
vredina [299]3 years ago
5 0

Answer:

The sum of 4 times a number cubed and six

Step-by-step explanation:

...

Sphinxa [80]3 years ago
3 0
Four times the sum of n plus six
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A sphere has a radius of 4 in. Which equation finds the volume of the sphere?
Ede4ka [16]

Volume : 4πR³/3


R=4


↓


V = 4π·4³/3                   or                   \frac{4}{3}*\pi  *(4)^{3}



5 0
3 years ago
Read 2 more answers
In a MBS first year class, there are three sections each including 20 students. In the first section, there are 10 boys and 10 g
KIM [24]

Answer:

3.52 \times 10^{-9} = 3.52 \times 10^{-7}\% probability that all the 15 students selected are girls

Step-by-step explanation:

The selection is from a sample without replacement, so we use the hypergeometric distribution to solve this question.

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

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)!}

All girls from the first group:

20 students, so N = 20

10 girls, so k = 10

5 students will be selected, so n = 5

We want all of them to be girls, so we find P(X = 5).

P_1 = P(X = 5) = h(5,20,5,10) = \frac{C_{10,5}*C_{10,5}}{C_{20,5}} = 0.0163

All girls from the second group:

20 students, so N = 20

5 girls, so k = 5

5 students will be selected, so n = 5

We want all of them to be girls, so we find P(X = 5).

P_2 = P(X = 5) = h(5,20,5,5) = \frac{C_{5,5}*C_{15,5}}{C_{20,5}} = 0.00006

All girls from the third group:

20 students, so N = 20

8 girls, so k = 8

5 students will be selected, so n = 5

We want all of them to be girls, so we find P(X = 5).

P_3 = P(X = 5) = h(5,20,5,8) = \frac{C_{8,5}*C_{12,5}}{C_{20,5}} = 0.0036

All 15 students are girls:

Groups are independent, so we multiply the probabilities:

P = P_1*P_2*P_3 = 0.0163*0.00006*0.0036 = 3.52 \times 10^{-9}

3.52 \times 10^{-9} = 3.52 \times 10^{-7}\% probability that all the 15 students selected are girls

7 0
3 years ago
A plane flies 452 miles north and then 767 miles west. What is the magnitude of the plane's resultant vector? Hint: Draw a vecto
irakobra [83]

Answer:

I hope it'll help you...

3 0
2 years ago
2 3/4 + 2 4/5 what is this math equation?
Allushta [10]

Answer:

Step-by-step explanation:

5.55

3 0
3 years ago
Leah has two congruent beach balls. The diameter of one ball is 20 inches. Which choice is the closest for the volume of the sec
pychu [463]
4/3 * pi * r^3
4/3 * 3.14 * 10^3
4/3 * 3.14 * 1000
4/3 * 3140 = 4186.66 rounds to 4187 in^3
6 0
3 years ago
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