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3 years ago

PLEASE ANSWER RIGHT AWAY

Mathematics

1 answer:

Gala2k [10]3 years ago

4 0

Answer:

D) 43.1

Step-by-step explanation:

What we want to do here is find the total volume of the box in cubic inches, then divide it by the number of apples inside. This will tell us how big one apple is in cubic inches.

Box One:

20×13×12 = 3120

3120÷72 apples = 43.3 inches³

Box Two:

12×12×12 = 1728

1728 ÷ 40 = 43.2 inches³

Box Three:

20×10×6 = 1200

1200÷28 = 42.8 inches³

Take those three numbers and find their mean. Add them up and divide by three. You will get 43.1 inches ³.

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in a final exam you have four multliple choice questions left to do. each questions has five suggested answers and only one of t

kompoz [17]

Answer:

The probability that you get zero questions correct is 0.4096

The probability that you get one questions correct is 0.4096

The probability that you get three questions correct is 0.0256

Step-by-step explanation:

These probability can be describe with a Binomial Distribution. These distribution can be used when we have n identical and independent situations in which there is a probability p or probability of success and a probability q or probability of fail. Additionally q is equal to 1 - p. The probability of x for a situation in which we can apply binomial distribution is:

$P( x,n,p) = n Cx * p^{x } * q^ {n-x}$

Where x is the variable that says the number of success in the n situations

And nCx is calculate as:

$nC x = \frac{ n!}{ x! (n-x)! }$

From the question we can identify that:

n is equal to 4 multiple choice question
p is 1/5 or 0.2, the probability of get one question correct
q is 4/5 or 0.8, the probability of get one question incorrect

Then the probability of get zero questions correct of 4 questions is:

$P( 0, 4, 0.2) = 4 C0 * p^{0 } * q^ {4-0}= 0.4096$

The probability of get one question correct of 4 questions is:

$P( 1, 4, 0.2) = 4 C1 * p^{1 } * q^ {4-1}= 0.4096$

The probability of get three questions correct of 4 questions is:

$P( 3, 4, 0.2) = 4 C3 * p^{3 } * q^ {4-3}= 0.0256$

8 0

3 years ago

Combine to create an equivalent expression -n + (-4) - (-4n) +6

Sav [38]

Answer: The answer is 3n + 2

Step-by-step explanation: You will have to combine like terms:

=−n + −4 + 4n + 6

=(−n + 4n) + (−4 + 6)

=3n + 2

3 0

3 years ago

How many solutions exist for the given equation?

Alinara [238K]

Answer: X = 2

Step-by-step explanation:

Step 1: Simplify both sides of the equation!

Step 2: Subtract 4x from both sides.

Step 3: Subtract 6 from both sides.

Step 4: Multiply both sides by 2/(-7).

3 0

3 years ago

2 3/4 - 1 1/8=?

Airida [17]

Basically you need to make the denominator (whats on the bottom) the same, lets take the first one for example

2 3/4, lets put this all over 4 for the same denominator.

2=8/4, and then add this to 3/4 to get 11/4.

the second part will work the same way,

start by making 1 into 8/8. add this to 1/8 to get 9/8

now we have to add 11/4 and 9/8. to do this, you have to find the smallest multiple between the two (for example: between 6 and 4 it would be 12, since 4*3= 12, and 2*6=12)

now, the smallest common multiple between 4 and 8 would just be 8

11/4= 22/8, since you multiply the bottom and top by the same amount so it still equals 11/4, but your denominator will now be 8.

now you can subtract. 22/8- 9/8= 13/8

final answer: 13/8

try the rest yourself since this is important for later math, hoped this helped :)

3 0

2 years ago

Read 2 more answers

1 5/12 x 6 1/3 = <br> please do it write this is my last and only chance to bring up my grade

irina [24]

Answer:

8 35/36

Step-by-step explanation:

1 5/12 * 6 1/3= 8 35/36

6 0

2 years ago

Read 2 more answers