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2 years ago

5

A grocery store sells tangerines in 2/5 kg bags. A customer bought 4 kg of tangerines for a school party. How many bags did he b

uy?

2 answers:

Alex777 [14]2 years ago

8 0

10kg bags I believe

sergeinik [125]2 years ago

7 0

Answer:

So if you are in middle school like me, they are asking for an equation answer, and that equation is 4 divided by 2/5 = _ and _ x 2/5 = 4

Step-by-step explanation:

You might be interested in

Answer Question number 5 <br><br>Plzzzz

Softa [21]

Step-by-step explanation:

Consider x⅓ =a

then the following expression can be written as

a²+a-2

a²+2a-a-2

a(a+2)-1(a+2)

(a+2)(a-1)

a= -2 or, a= 1

Putting the value of a

x⅓ = -2 and, x⅓ =1

6 0

3 years ago

Read 2 more answers

A card is drawn from a standard deck of 5252 playing cards. What is the probability that the card will be a heart or a face card

mr_godi [17]

Answer:

The probability that the card will be a heart or a face card is P=0.4231.

Step-by-step explanation:

We have a standard deck of 52 cards.

In this deck, we have 13 cards that are a heart.

We also have a total of 12 face cards (4 per each suit). So there are 3 face cards that are also a heart.

To calculate the probability that a card be a heart or a face card, we sum the probability of a card being a heart and the probability of it being a face card, and substract the probability of being a heart AND a face card.

We can express that as:

$P(H\,or\,F)=P(H)+P(F)-P(H\&F)\\\\P(H\,or\,F)=13/52+12/52-3/52=22/52=0.4231$

4 0

3 years ago

For sisters bought a present for their father. They recieved a 10% discount on the original price of the gift . after the discou

Basile [38]

Since they each paid the same amount, we can figure out that 9*4=36 dollars is the price of the gift. Next, since there was a 10% discount (or 0.1 by moving the decimal 2 spots to the left), we can say that the original gift price is x and
x-0.1*x=0.9*x due to that we subtract the 10% discount (and it's 10% of the original price). In addition, the sisters paid 0.9*x, which is 36. Dividing both sides by 0.9, we get x=40

7 0

3 years ago

A half-century ago, the mean height of women in a particular country in their 20s was 62.1 inches. Assume that the heights of

Luba_88 [7]

Answer:

About 1.16% of all samples have mean heights of at least 63.42 inches.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central limit theorem:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$

In this problem, we have that:

$\mu = 62.1, \sigma = 2.85, n = 24, s = \frac{2.85}{\sqrt{24}} = 0.58175$

What percentage of all samples of 24 of today's women in their 20s have mean heights of at least 63.42 inches?

This is 1 subtracted by the pvalue of Z when X = 63.42. So

$Z = \frac{X - \mu}{\sigma}$

By the Central Limit Theorem

$Z = \frac{X - \mu}{s}$

$Z = \frac{63.42 - 62.1}{0.58175}$

$Z = 2.27$

$Z = 2.27$ has a pvalue of 0.9884

1 - 0.9884 = 0.0116

About 1.16% of all samples have mean heights of at least 63.42 inches.

8 0

3 years ago

If their are fewer than 7 gallons of gas in the tank. Use f as your variable.

Talja [164]

F<7 because there are fewer than 7 gallons in the tank meaning it cannot be greater than or equal to so it is just less than

4 0

3 years ago