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Furkat [3]
3 years ago
6

Ashley has 20 pieces of candy in a bag: 2 mint sticks, 4 jelly treats, and 14 fruit tart chews. If she eats one piece every 8 mi

nutes, what is the probability her first two pieces will both be jelly treats?
Mathematics
1 answer:
AleksAgata [21]3 years ago
3 0
The probability that her first treat is jelly is 4/20. Since she eats the candy and does not replace it, the probability the second treat is jelly would be 3/19 (1 less jelly and 1 less total candies). You would then multiply (4/20) by (3/19). That is your answer.
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Voltage sags and swells. The power quality of a transformer is measured by the quality of the voltage. Two causes of poor power
zysi [14]

Answer:

a

 z-score = 1.57

b

 z-score_s = -3.36

Step-by-step explanation:

From the question we are told that

   The sample size is  n =  103  

    The  sample mean of  sag is  \= x_1 =  353

     The sample mean of swells is  \= x_2 =  184

    The standard deviation of  sag is  s_1  =  30

     The standard deviation of swells is  s_2  =  25

     The number of swell for a randomly selected transformer is  k  =  100

      The number of sag for a randomly selected transformer is  c  =  400

Generally the z-score for the number of swells is mathematically represented as

     z-score_s = \frac{ k - \= x_2}{s_2}

=>   z-score_s = \frac{ 100- 184}{25}

=>     z-score_s = -3.36

       

Generally the z-score for the number of sags is mathematically represented as    

      z-score = \frac{ c - \= x_1}{s_1}

     z-score = \frac{ 400 - 353}{30}

     z-score = 1.57

4 0
3 years ago
How do you do percentages?​
Travka [436]

https://www.skillsyouneed.com/num/percent-change.html

8 0
3 years ago
Read 2 more answers
Convert − 6 7to a decimal. Go out 3 decimal places and round as appropriate.
Sholpan [36]

Answer:

-0.85714285714

Rounded answer:

-0.86

Step-by-step explanation:

8 0
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In order to reach the port, people must take a small ferry across the river. 78 people are waiting for the ferry and 28 people c
Naily [24]

Answer: 22 people will be riding the lady trip on the ferry

6 0
3 years ago
Show how to find the unit rate of oats to quinoa. Tell what the unit rate means.
Dmitry [639]

Answer:

The unit rate is 4 cups of oats per a cup of quinoa

Unit Rate is a ratio of two measurements in which the 2nd term is 1

Step-by-step explanation:

* Lets explain the meaning of unit rate

- A rate is a ratio that is used to compare different types of quantities

- A unit rate describes how many units of the first type of quantity

 corresponds to one unit of the second type of quantity

- To calculate the unit rates, we simply divide the two numbers

  in a fraction with denominator equal 1

- Ex:

# The unit rate of 50 miles per 5 hours is 50/5 = 10 miles per hour

# The unit rate of $20 dollars for 5 books is 20/4 = 5 dollars per book

∴ <u><em>Unit Rate is a ratio of two measurements in which the 2nd term is 1</em></u>

<u><em /></u>

* <em>Lets find the unit rate of oats to quinoa</em>

∵ There are 2 cups of oats

∵ There is a 1/2 cup of quinoa

∵ We need the unit rate of oats to quinoa

- Divide the quantity of oats by the quantity of quinoa

∴ 2/(1/2) ⇒ multiply up and down by 2

∴ (2 × 2)/(1/2 × 2) = 4/1

∴ <u><em>The unit rate is 4 cups of oats per a cup of quinoa</em></u>

4 0
3 years ago
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