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sergey [27]
3 years ago
6

Suppose you like to keep a jar of change on your desk. Currently, the jar contains the following: 18 Pennies13 Dimes 18 Nickels1

3 Quarters What is the probability that you reach into the jar and randomly grab a nickel and then, without replacement, another nickel
Mathematics
1 answer:
Nezavi [6.7K]3 years ago
6 0

Answer:

P(Nickel\ and\ Nickel) = 0.08091

Step-by-step explanation:

Given

Pennies = 18

Dimes = 13

Nickels = 18

Quarters = 13

Required

Probability of selecting 2 nickels without replacement

This can be represented as: P(Nickel\ and\ Nickel)

The solution is as follows

P(Nickel\ and\ Nickel) = \frac{Nickel}{Total}*\frac{Nickel-1}{Total-1}

The second nickel is reduced by 1 because the first nickel was not replaced and this also reduces the total by 1

So, we have:

P(Nickel\ and\ Nickel) = \frac{18}{62}*\frac{18-1}{62-1}

P(Nickel\ and\ Nickel) = \frac{18}{62}*\frac{17}{61}

P(Nickel\ and\ Nickel) = \frac{18*17}{62*61}

P(Nickel\ and\ Nickel) = \frac{306}{3782}

P(Nickel\ and\ Nickel) = 0.08091

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soldi70 [24.7K]

Answer:

the answer is all of the stores( store A, B, C, D)

Step-by-step explanation:

$8.43 divided by 3 is 2.81 per pound

$9.51 divided by 3 is 3.17 per pound

$2.58 divided by 3 is 0.86 per pound

$5.19 divided by 3 is 1.73 per pound

and 3.49>3.17>2.81>1.73>0.86

4 0
3 years ago
Here is the other part sorry
PSYCHO15rus [73]

Answer:

1) 32/5

2) 19/8

3) 34/7

4) 25/3

How to do this

You take the denominator (the number on the bottom), multiply it by the whole number (like in 1, 5*6=30) then add the numerator (the top number) (so 30+2) then add on top of the denominator before you changed anything (32/5)


4 0
4 years ago
) B. Communicate Precisely LaTanya wants to place
gavmur [86]

Hi, you've asked an incomplete question. I attached the missing caption that completes the question.

Explanation:

By looking closely at the caption we notice there are measuring coordinates along the margin of the caption. To find the middle of the chairs, take note of the total coordinate distances between points C and D;

  • For the vertical axis, the distance is 4
  • For the horizontal axis, the distance is 2

Substracting both differences in distances we get 2 (4-2) so at point (10, 7) we find the middle or halfway between the chairs at points C  and D.

7 0
3 years ago
Y-5=6(x-7)<br><br> A. (5,7)<br> B. (7,5)<br> C. (-7,-5)<br> D. (-5,-7)
lidiya [134]

Answer:

B

Step-by-step explanation:

7-7 x 5 = 0

5-5 = 0

8 0
4 years ago
Help please! Thanks in advance
svetoff [14.1K]
So line b is (0,0) and (4, -3/2)

slope = m = y2-y1/ x2-x1

= -3/2 - 0 / (4-0 )= -3/8

now using point slope y-y1=m(x-x1)

m=-3/8 and point is (0,0) to make it easier
y-0 = -3/8 (x-0)
y=-3/8x

so we have the first line done, now another line is parallel to line b which means they have the same slope

line 2 has slope = m = -3/8
and point (0,-7)

using point slope again y-y1=m(x-x1)

y- (-7) = (-3/8) (x-0)

y=(-3/8)x -7

hope that helps and is right
7 0
3 years ago
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