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Firlakuza [10]
3 years ago
9

Maggie has 3 binders with 25 stamps in each binder She has 5 binders with 24 baseball cards in each binder. if she gives 35 stam

ps to a friend, how many stamps and cards does she have left
Mathematics
1 answer:
madreJ [45]3 years ago
8 0

Your goal of this problem is to find the total amount of cards and stamps and then subtract 35 stamps from that number.

To do this, you first must find your total stamps.

3 binders x 25 stamps = ________ Total Stamps

Now find your total cards.

5 binders x 24 cards = ________ Total Cards

Now take these two totals and add them to find your grand total of items.

______ Total Cards + _______Total Stamps = ________ Grand Total

Now take your grand total and subtract 35 from it to find your answer.

_______ Grand Total - 35 stamps = _______Answer!!! :)

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In a certain country the life expectancy for women in 1990 was 45 and in 2000 it was 85?years. Assuming that life expectancy bet
Darya [45]

Answer:

49145 years

Step-by-step explanation:

In a certain country the life expectancy for women in 1990 was 45 and in 2000 it was 85?years.

Assuming that life expectancy between 2000 and 2100 increases by the same percentage as it did between 1900 and 2000,what will life expectancy be for women in 2100?

In 10 years, the expectancy increased by 85/45 = 17/9

between 2000 and 2100, it will increas by 10 time 10 years, so expected expectancy is  85*(\frac{85}{45})^{10} = 49145  years

4 0
3 years ago
A vending machine automatically pours soft drinks into cups. The amount of soft drink dispensed into a cup is normally distribut
labwork [276]

Answer:

a) P(X>8)=P(\frac{X-\mu}{\sigma}>\frac{8-\mu}{\sigma})=P(Z>\frac{8-7.6}{0.4})=P(Z>1)

And we can find this probability using the complement rule and the standard normal table or excel:

P(Z>1)=1-P(Z

b)P(X

And we can find this probability using the standard normal table or excel:

P(Z

c) For this case we have a total of 868 cups and we know that the fraction of cups that will be overflow is 0.159, so then the expected number of cups overflow would be:

N = 868*0.159= 138.012 \approx 138

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Part a

Let X the random variable that represent the amount of soft frink of a population, and for this case we know the distribution for X is given by:

X \sim N(7.6,0.4)  

Where \mu=7.6 and \sigma=0.4

We are interested on this probability

P(X>8)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X>8)=P(\frac{X-\mu}{\sigma}>\frac{8-\mu}{\sigma})=P(Z>\frac{8-7.6}{0.4})=P(Z>1)

And we can find this probability using the complement rule and the standard normal table or excel:

P(Z>1)=1-P(Z

Part b

We are interested on this probability

P(X

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X

And we can find this probability using the standard normal table or excel:

P(Z

Part c

For this case we have a total of 868 cups and we know that the fraction of cups that will be overflow is 0.159, so then the expected number of cups overflow would be:

N = 868*0.159= 138.012 \approx 138

6 0
4 years ago
What is the length of BC?<br><br> A.7<br> B.12<br> C.13<br> D.17<br> E V60<br> F. V119
Karolina [17]

Answer:

c. 13

Step-by-step explanation:

c²=a²+b²

c²=5²+12²

c²=169

c=13

7 0
2 years ago
What percentage of 1day is 4 hours​
hammer [34]

Answer: 18.75

Step-by-step explanation:There are 24 hours in a day. 4 hours 30 minutes is 4.50 hours. Which is equal to 18.75%.

3 0
3 years ago
PLEASE HELP ILL GOVE BRAINLIST !!!
PSYCHO15rus [73]

The tree is 16 ft tall.

4/6=x/24

If you make the denominators the same you will find your answer which is 16 ft tall.

6 0
3 years ago
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