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Zinaida [17]
3 years ago
14

Help fast please i’m bad with math

Mathematics
2 answers:
yKpoI14uk [10]3 years ago
8 0
I dont know but i think either B or A
jeyben [28]3 years ago
6 0

Answer:

FALSE, TRUE, FALSE, FALSE

Step-by-step explanation:

pi/2>2 - FALSE

3pi>9 - TRUE

2pi-1<5 - FALSE

pi+8<11 - FALSE

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Gasoline at a particular gas station cost $2.78 per gallon if Cory buys $18 of gas how many gallons did he buy?
Evgen [1.6K]

Answer:

6.47 gal

Step-by-step explanation:

cost of gas per gallon = $2.78

rate of change is cost of gas per gallon as cost to buy gas changes with the change in quantity of gallon.

Total cost for x gallons = cost of gas per gallon*x = 2.78x

Given that total money paid by him is $18

2.78x = 18

x = 18/2.78 = 6.47

8 0
4 years ago
Read 2 more answers
What is the probability that in two rolls of a single die, a man will roll a 2 on the first roll and a number greater than five
n200080 [17]

Answer:

Step-by-step explanation:

I got A because the probability of rolling a 2 is 1/6 chance. Then the probability of getting a number greater than 5 is a 1/6 chance because there’s only one number bigger than five on a die. So I added them together got 2/6 and simplified down is 1/3

4 0
4 years ago
Read 2 more answers
Two socks are selected at random from a draw of loose socks- there are 4 green socks and 6 yellow socks
lara [203]

Using the hypergeometric distribution, it is found that there is a 0.1333 = 13.33% probability that two of the socks will both be green if the socks are drawn without replacement.

<h3>What is the hypergeometric distribution formula?</h3>

The formula is:

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

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

The parameters are:

  • x is the number of successes.
  • N is the size of the population.
  • n is the size of the sample.
  • k is the total number of desired outcomes.

In this problem, we have that the values of the parameters are:

N = 10, k = 4, n = 2.

The probability that both are green is P(X = 2), hence:

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

P(X = 2) = h(2,10,2,4) = \frac{C_{4,2}C_{6,0}}{C_{10,2}} = 0.1333

0.1333 = 13.33% probability that two of the socks will both be green if the socks are drawn without replacement.

More can be learned about the hypergeometric distribution at brainly.com/question/24826394

#SPJ1

4 0
2 years ago
This box plot shows information about the marks scored in a test.
kompoz [17]

Answer:

see explanation

Step-by-step explanation:

(a)

The median is represented by the solid vertical line inside the box, that is

median = 58

(b)

The interquartile range is the difference between the upper and lower quartiles.

The upper quartile is the value on the right side of the box, that is 72

The lower quartile is the value on the left side of the box, that is 34

Interquartile range = 72 - 34 = 38

(c)

The range is the difference between the maximum and minimum values

The maximum is indicated by the vertical bar on the right outside the box

The minimum is indicated by the vertical bar on the left outside the box

Range = 86 - 10 = 76

8 0
3 years ago
The diameter D of a sphere is 18.6 cm. Calculate the sphere's surface area A
IRINA_888 [86]

Answer:

1086.3 cm²

Step-by-step explanation:

surface are of sphere = πD²

SA = (3.14)(18.6 cm)^2

SA = 1086.3 cm²

6 0
3 years ago
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