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
Naddik [55]
3 years ago
5

A cream company advertised that 3 out of every 24 boxes of cereal had a prize inside. What is the ratio of boxes with prizes to

boxes with no prizes?
A) 1:7
B) 1:8
C) 7:1
D) 8:1
Explain the proof
------------------------------------
Please help I will mark as the brainleist answer!!!! Thanks for 14 points
Mathematics
1 answer:
lawyer [7]3 years ago
6 0
1:8 is the correct answer because 24 divided by 3 is 8.
You might be interested in
I have 5 apples I eat 5 how many do I have
valkas [14]

Answer:

You clearly have 0 left. Save your apples.

Step-by-step explanation:

5 - 5 = 0

5 0
3 years ago
Read 2 more answers
Solve 10 X + 8 / 2 X + 7 is equal to 4 ​
ale4655 [162]

Answer:

x = 10

Step-by-step explanation:

\frac{10x + 8}{2x + 7}  = 4

or, 10x + 8 = 4(2x + 7)

or, 10x + 8 = 8x + 28

or, 10x - 8x = 28 -8

or, 2x = 20

or, x = 20/2

or, x = 10

x = 10

4 0
2 years ago
Darin skateboarded to the west at 8 m/s. In 7 seconds, he slowed down to 3
MakcuM [25]

Answer:

C) -0.71m/s²

Step-by-step explanation:

V = V0 + at

V = final veloctiy

V0 = Initial velocity

a = acceleration

t = time

3 = 9 + a7

-5 = a7

-\frac{5}{7} = a

a ≅ -0,71

3 0
3 years ago
) All human blood can be typed as one of O, A, B, or AB. The distribution of the type varies a bit with race. For African-Americ
ivann1987 [24]

Answer:

The correct option is 1 - [(0.8)¹⁰+10*0.2*(0.8)⁹]= 0.6242

Step-by-step explanation:

Hello!

Given the distribution of probabilities for blood types for African-Americans:

O: 0.4

A: 0.2

B: 0.32

AB: 0.08

A random sample of 10 African-American is chosen, what is the probability that 2 or more of them have Type A blood?

Let X represent "Number of African-Americans with Type A blood in a sample of 10.

Then you have two possible outcomes,

"Success" the person selected has Type A blood, with an associated probability p= 0.2

"Failure" the selected person doesn't have Type A blood, with an associated probability q= 0.8

(You can calculate it as "1-p" or adding all associated probabilities of the remaining blood types: 0.4+0.32+0.08)

Considering, that there is a fixed number of trials n=10, with only two possible outcomes: success and failure. Each experimental unit is independent of the rest and the probability of success remains constant p=0.2, you can say that this variable has a Binomial distribution:

X~Bi(n;p)

You can symbolize the asked probability as:

P(X≥2)

This expression includes the probabilities: X=2, X=3, X=4, X=5, X=6, X=7, X=8, X=9, X=10

And it's equal to

1 - P(X<2)

Where only the probabilities of X=0 and X=1 are included.

There are two ways of calculating this probability:

1) Using the formula:

P(X)= \frac{n!}{(n-X)!X!} *p^{x} * q^{n-x}

With this formula, you can calculate the point probability for each value of X=x₀ ∀ x₀=1, 2, 3, 4, 5, 6, 7, 8, 9, 10

So to reach the asked probability you can:

a) Calculate all probabilities included in the expression and add them:

P(X≥2)= P(X=2) + P(X=3) + P(X=4) + P(X=5) + P(X=6) + P(X=7) + P(X=8) + P(X=9) + X=10

b) Use the complement rule and calculate only two probabilities:

1 - P(X<2)= 1 - [P(X=0)+P(X=1)]

2) Using the tables of the binomial distribution.

These tables have the cumulative probabilities listed for n: P(X≤x₀)

Using the number of trials, the probability of success, and the expected value of X you can directly attain the corresponding cumulative probability without making any calculations.

>Since you are allowed to use the complement rule I'll show you how to calculate the probability using the formula:

P(X≥2) = 1 - P(X<2)= 1 - [P(X=0)+P(X=1)] ⇒

P(X=0)= \frac{10!}{(10-)0!0!} *0.2^{0} * 0.8^{10-0}= 0.1074

P(X=1)= \frac{10!}{(10-1)!1!} *0.2^{1} * 0.8^{10-1}= 0.2684

⇒ 1 - (0.1074+0.2684)= 0.6242

*-*

Using the table:

P(X≥2) = 1 - P(X<2)= 1 - P(X≤1)

You look in the corresponding table of n=10 p=0.2 for P(X≤1)= 0.3758

1 - P(X≤1)= 1 - 0.3758= 0.6242

*-*

Full text in attachment.

I hope it helps!

8 0
3 years ago
Which value of a would make the following statement true -4(2x - a) = -8x + 16?
pashok25 [27]
The answer would be B. -4
5 0
3 years ago
Other questions:
  • What is the answer?! Please help!
    7·1 answer
  • Match each quadratic equation with its solution set
    15·1 answer
  • Calculate the average rate of change from x = 0 to x = 3. Show work please
    7·1 answer
  • a, b, c are the side lengths of a triangle in decreasing order. What is the sum of all possible whole values of a, if b=7, c=5 ?
    9·2 answers
  • Make x the subject of e = bx-d<br><br>YA'LL PLEASE I CAN'T DO MATHS​
    11·2 answers
  • M is between points c and q. CM=22 and CQ=39. What is MQ ?
    15·2 answers
  • Which sentence is Correct and please take your time !!!
    7·2 answers
  • Elena walked 12 miles. Then she walked 0.25 that distance. How far did she walk altogether? Select all that apply.
    7·2 answers
  • Find the missing side length.
    15·1 answer
  • Transcribed Image Text:to the Tledrest tentn. A landscaper wants to place a stone walkway from one corner of the rectangular law
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!