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hichkok12 [17]
2 years ago
7

If the screws that are 4/8 of an inch are laid end to end touching each other how far would the row extend?

Mathematics
2 answers:
Irina18 [472]2 years ago
8 0
Idk because you did not say yes you did how many sides there were
Igoryamba2 years ago
4 0
Im sure it is number one

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A fish tank, filled with water, is 100cm long,60cm wide and 40cm high. It is tilted resting on a 60cm edge, with the water level
grin007 [14]
20 cm deep since 50 x 60 x 40 = 10 x 60 x 20
7 0
1 year ago
Andrea is shopping for items for her pet sitting business because the store is having a sale where everything in the store is 5%
mars1129 [50]

Answer:

i promise it's A i am 1,00000000000000000000000000000000000000 sure

Step-by-step explanation:

3 0
2 years ago
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The average rate of the first part of Yi’s walk on a park loop was 4 miles per hour. She then met up with a friend and the two w
irakobra [83]
So she walked during this time with <span>4 miles per hour (x*4)

during the rest of the way (which is 0.7-x, as the whole way took her 42 minutes, so the rest is 0.7-x) she walked with 5 miles per hour - the distance was (0..7-x)*5 m/h



the total distance was 3 miles, so if we sum the two distances, we will get 3 miles:

x*4+ (0.7-x)*5=3

let's remove the bracket:

4x+0.7*5-5x=3
</span>
<span>4x+3.5-5x=3

subtract 3.5 from both sides:
4x-5x=3-3.5
-x=-0.5
 
multiply both sides by  (-1)
x=0.5:

so she walked for half an hour alone, that is for 30 minutes!</span>
8 0
1 year ago
Read 2 more answers
A television show tests the abilities of alleged psychics by presenting contestants with a set of
expeople1 [14]

Answer:

The mean and standard deviation of the number of trials where the contestant guesses correctly are 12.50 and 3.062.

Step-by-step explanation:

Total number of cards presented to the contestants, <em>N</em> = 4.

Number of cards that has a star printed on it is, <em>x</em> = 1.

The probability of selecting the correct card is:

P(X)=\frac{x}{N}=\frac{1}{4}=0.25

It is provided that each contestant attempts to identify which card has the star on it for a series of <em>n</em> = 50 trials.

Each trial's outcome is independent of other outcomes.

The success of each trial is denoted by the correct selection of the card with a star.

The random variable <em>X</em> can be explained by the Binomial distribution.

So, <em>X</em> follows a Binomial distribution with parameters <em>n</em> = 50 and <em>p</em> = 0.25.

The mean and standard deviation of a Binomial distribution are:

\text{Mean}=np\\\\\text{SD}=\sqrt{np(1-p)}

Compute the mean and standard deviation of the number of trials where the contestant guesses correctly as follows:

\text{Mean}=np=50\times 0.25=12.50\\\\\text{SD}=\sqrt{np(1-p)}=\sqrt{50\times 0.25\times (1-0.25)}=3.062

Thus, the mean and standard deviation of the number of trials where the contestant guesses correctly are 12.50 and 3.062.

7 0
1 year ago
Ice Cream Scoops - In shops with lots of ice-cream flavors there are many different flavor combinations, even with only a 2-scoo
blondinia [14]

Answer:

The general formula that can be used to find the required combinations for n flavor ice-cream.

N_n = \frac{n(n+1)}{2}

For 10 ice-cream flavors

N_{10} = \frac{10(10+1)}{2}

N_{10} = 55

Step-by-step explanation:

Let V = Vanila, C = Chocolate, S = Strawberry, P = Pineapple, B = Berry

2 ice-cream flavor:

V, C

{V/V, V/C, C/C}

3 possible combinations

3 ice-cream flavor:

V, C, S

{V/V, V/C, V/S, C/S, C/C, S/S}

6 possible combinations

4 ice-cream flavor:

V, C, S, P

{V/V, V/C, V/S, V/P, C/S, C/P, S/P, C/C, S/S, P/P}

10 possible combinations

5 ice-cream flavor:

V, C, S, P, B

{V/V, V/C, V/S, V/P, V/B, C/S, C/P, C/B, S/P, S/B, P/B, C/C, S/S, P/P, B/B }

15 possible combinations

So we have a series of

3, 6, 10, 15...

This series is known as Triangular number series

1 + 2 = 3

1 + 2 + 3 = 6

1 + 2 + 3 + 4 = 10

1 + 2 + 3 + 4 + 5 = 15

The general formula for this series is

N_n = \frac{n(n+1)}{2}

Using the above formula we can predict the number of 2-scoop combinations with 10 flavors.

N_{10} = \frac{10(10+1)}{2}

N_{10} = 55

Therefore, there are 55 different combinations of 2-scoop  with 10 flavors.

5 0
2 years ago
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