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
tatyana61 [14]
3 years ago
8

PLEASE PLEASE PLEASE HELP ME. IM STUCK IN A SUMMER SCHOOL AND IF I DONT GET GOOD GRADES ILL GET IN BIG TROUBLE AND IM TOTALLY LO

ST ON THIS PROBLEM. I ALREADY DID THE FIRST TWO BUT I DONT KNOW HOW TO DO THE LAST ONE. PLEASE HELP ME!!!!

Mathematics
1 answer:
Mrrafil [7]3 years ago
3 0

Answer:

We know that in the box there are:

4 twix

3 kit-kat

Then the total number of candy in the box is:

4 +3 = 7

a)

Here we want to find the probability that we draw two twix.

All the candy has the same probability of being drawn from the box.

So, the probability of getting a twix in the first drawn, is equal to the quotient between the number of twix and the total number of candy in the box, this is:

p = 4/7

Now for the second draw, we do the same, but because we have already drawn one twix before, now the number of twix in the box is 3, and the total number of candy in the box is 6.

this time the probability is:

q = 3/6 = 1/2

The joint probability is the product of the individual probabilities, so here we have

P = p*q = (4/7)*(1/2) =  2/7

b) same reasoning than in the previous case:

For the first bar, the probability is:

p = 3/7

for the second bar, the probability is:

q = 2/6 = 1/3

The joint probability is:

P = p*q = (3/7)*(1/3) = 1/7

c) Suppose that first we draw a twix.

The probability we already know that is:

p = 4/7

Now we want another type, so we need to draw a kit-kat, the probability will be equal to the quotient between the remaining kit-kat bars (3) and the total number of candy in the box (6)

q = 3/6

The joint probability is:

P = p*q = (4/7)*(3/6) = 2/7

But, we also have the case where we first draw a kit-kat and after a twix, so we have a permutation of two, then the probability in this case is:

Probability = 2*P = 2*2/7 = 4/7

You might be interested in
This figure is 14 of a circle.
Wittaler [7]

Answer:

The perimeter of a quarter of a circle with radius 2 inches is 7.1 inches.

Step-by-step explanation:

Given : A quarter of a circle with radius labeled 2 in.

Quarter of circle means fourth part of a circle  (as shown in image by shaded part).

We have to find the perimeter of this shaded quarter of circle.

Perimeter is the sum of the dimension of the given figure.

Perimeter of circle is 2\pi r

Since, we are given Quarter circle so its perimeter \frac{2}{4} \pi r+r+r=\frac{1}{2} \pi r+r+r

Perimeter of given figure = \frac{1}{2} \pi r+r+r

Perimeter of given figure = \frac{1}{2}\cdot 3.14 \cdot 2+2+2=3.14+4=7.14

Thus, the perimeter of a quarter of a circle with radius 2 inches is 7.1 inches.

6 0
3 years ago
Read 2 more answers
Iris is building a model of the Washington Monument. Her model measures 15 in. tall and is 1.5 in. wide at the base. The actual
irina [24]
Using how tall it is over how wide
=>tall/wide
The model 15in/1.5in
The actual x/55ft

Convert everything into the same units so 55ft to inches
There are 12in in 1ft
55ft * 12in/1ft
The ft cross out leaving in
55*12in= 660 in

So
15in/1.5in = x/660in
Now solve for x my multiplying both side by 660in
660in *15in/1.5in=x
x= 6600in tall




5 0
3 years ago
Read 2 more answers
X + 3= -x -5<br><br>what's x?​
Karo-lina-s [1.5K]

Answer:

-4

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Jasonhas a coupon for $2.50 off any electronic Book from an online store. If the original price in dollars of an electric book b
Andru [333]
3+2.50=P or 5.50





this doesn't matter just trying to get 20 characters
7 0
3 years ago
The complement of the markup rate based on selling price is the percent of _____ based on selling price.
mezya [45]
Is it multiple choice? If so, leave the answer choices.
4 0
3 years ago
Read 2 more answers
Other questions:
  • How many 7-digit numbers are there where all the digits are different and in increasing order? for example, the numbers 1345689
    14·1 answer
  • I already got the answer, here's free points I guess :/
    11·2 answers
  • Please help me I don’t understand this question and it’s a quiz
    7·1 answer
  • Find each unit rate 6.78 mi on 3 gal
    13·1 answer
  • Find an equation of a line through (-2, 4) and perpendicular to -x+8y=16
    6·2 answers
  • What is 1/20 written as a decimal?
    13·1 answer
  • 7 1/8 - 3 2/3<br><br> faction plz
    6·2 answers
  • AaaHHHHH I NEED MORE HELP!!
    14·1 answer
  • In the diagram below, segment DG is Perpendicular to segment DF
    9·1 answer
  • If the area of a circle is
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!