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4 years ago

On a saturday,a library checked out 66 books.If

1 answer:

Nadusha1986 [10]4 years ago

5 0

We are given with the total number of library books of 66. 18 of these 66 books were classified as fiction while the remaining are non-fiction books. The ratio of non-Fiction to fiction can be determined by first finding out the number of non-fiction books. that is 66-18 or 48 books.The ratio then is 48/18 or 8/3.

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#1) A hot air balloon is at an altitude (height) of 113.2 meters. The balloon's altitude decreases by 10.8 meters every minute.

Minchanka [31]

Answer:

5min

Step-by-step explanation:

First form yourself an equation, 113.2-10.8x ≤70

Now begin to work it out

*113.2-10.8(1) ≤70 (instead of x, put a number, this will be how many minutes

1~ 102.4 is not less than or equal to 70, so we repeat this process

2~ 91.9

3~81.1

4~70.3 this is not the answer because even though its at 70 there is still a .3 so we keep going,

5~59.5

59.5 is ≤ 70, so the answer is 5 minutes

P.S. don't believe me? that's okay, use the formula, plug in five to see for yourself

i hope this helps ;)

3 0

3 years ago

sara compares to phone plans. plan A charges $99 for the phone plus $25 per month. plan B charges $39 for a phone and a $35 per

tino4ka555 [31]

Answer: 6th month

Step-by-step explanation:

Let the month where the plans cost the same be represented by x.

Plan A charges $99 for the phone plus $25 per month. This can be written as:

= 99 + 25x

Plan B charges $39 for a phone and a $35 per month. This can be written as:

= 39 + 35x

We then equate both equations and this will be:

99 + 25x = 39 + 35x

Collect like terms

99 - 39 = 35x - 25x

60 = 10x

x = 60/10

x = 6

The plan will cost the same in the 6th month.

8 0

4 years ago

True or false please answer asap.

e-lub [12.9K]

This question has to be false

I'm pretty sure

3 0

4 years ago

Read 2 more answers

( X - 1 )( 5x - 8 ) = 0

GREYUIT [131]

Answer:

what do we have to do?

3 0

3 years ago

You have been hired as the quality control office of a pharmaceutical company that manufactures aspirin tablets. According to th

Firlakuza [10]

Answer:

$P(X=0)=(24C0)(0.04)^0 (1-0.04)^{24-0}=0.375413$

$P(X=1)=(24C1)(0.04)^1 (1-0.04)^{24-1}=0.$

So then the probability that the batch would be accepeted is:

$0.375413+0.375413=0.7508$

Step-by-step explanation:

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=24, p=0.04)$

On this case p=0.04 represent the probability that a random the tablet would be NOT accepted

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

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

They accept the batch if there is only one or no tablet that doesn’t meet the test specification, so let's find the individual probabilities for this case:

$P(X=0)=(24C0)(0.04)^0 (1-0.04)^{24-0}=0.375413$

$P(X=1)=(24C1)(0.04)^1 (1-0.04)^{24-1}=0.$

So then the probability that the batch would be accepeted is:

$0.375413+0.375413=0.7508$

3 0

3 years ago