1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ede4ka [16]
3 years ago
15

Cherise has a bag of marbles for her little sister. It contains 10 orange marbles, 7 yellow marbles, and 3 green marbles. She dr

ops the bag and 3 marbles roll out. What is the probability that all 3 marbles are yellow?
a. 343/8000

b. 21/800

c. 7/228

d. 3/20

The weights of rats in a city are normally distributed with a mean of 2.5 pounds and a standard deviation of 0.5 pounds.

About what percent of the rats in the city weigh between 2.0 pounds and 3.0 pounds?

a. 81.5%

b. 68%

c. 47.5%

d. 34%
Mathematics
1 answer:
NemiM [27]3 years ago
8 0
The probability that all marbles are yellow is
(7/20) (7/20) (7/20) = 343/8000

We are given
x = 2 and 3
u = 2.5
s = 0.5

Getting the z score
z = (2 - 2.5) / 0.5 and (3 - 2.5)/ 0.5
z = -1 and 1
The percentage is 
1 - 0.1557 = 81.5%

You might be interested in
Suppose you are the president of the student government. You wish to conduct a survey to determine the student​ body's opinion r
patriot [66]

The best way to five students from a list of 626 students available such that it exhibits a random process is to List each name on a separate piece of paper; place them all in a hat, and pick five.

The selection process which should be undertaken by the student government, should be one which is inclusive and representative. Hence, the five students to be selected which makes up the sample of the total student should be chosen at random and transparently.

Hence, listing the names of each student on a Seperate piece of paper, placing it in a hat and making 5 selections showcase randomness and transparency, hence, it should be the adopted selection process.

Learn more : brainly.com/question/12719645?referrer=searchResults

5 0
3 years ago
Evaluate 17 + x<br> when x = 16
Vesnalui [34]
Answer: 17+ 16 = 33

Good luck !
3 0
3 years ago
Write the expression in expanded form that is equivalent to 3(7d +4e)
pickupchik [31]

Answer:

21+4

Step-by-step explanation:

3 times 7=21

3 times4=12

21d+4e

4 0
2 years ago
Read 2 more answers
Glen Cove has a population of 7,200, which is decreasing at a
slamgirl [31]

Answer:

11 years

Step-by-step explanation:

7200  -  80x  =  5000  +  120x
-5000 + 80x    -5000 + 80x
           2200 = 200x
                  11 = x

4 0
2 years ago
joshua uses to write the following sequence of numbers. 1/6,1/2,5/6,........,1 1/2. what rule did joshua use? what is the missin
expeople1 [14]
Joshua's rule was to add 2/6 or 1/4 (same thing) to the previous number. The missing number in Joshua's sequence is 1 1/6.
8 0
3 years ago
Other questions:
  • 22.700 nearest hundredth/6413202/1c463fd9?utm_source=registration
    10·1 answer
  • X + y = 4<br> 3x + 4y= 14
    7·2 answers
  • Can somebody do this without a calculator please?
    10·1 answer
  • Solve following equation<br> 3+x+1 =2
    7·2 answers
  • Cylinder A has a radius of 1 meter and a height of 4 meters.cylinder B has a radius of 2 meters and a heigh of 4 meters find the
    10·1 answer
  • What is the value of x ?
    15·1 answer
  • If y=sin2x+cos2x then dy/dx​
    10·1 answer
  • The following formula gives the temperature's measure in degrees Fahrenheit F, where C is the measure
    5·1 answer
  • May someone help me with this?
    14·1 answer
  • Which equation represents a linear function? Equation 1: y = 2x2 + 1 Equation 2: y2 = 3x + 1 Equation 3: y = 5x − 1 Equation 4:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!