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Serggg [28]
2 years ago
10

Hi i need help can somebody answer this question and give an explanation

Mathematics
1 answer:
Charra [1.4K]2 years ago
7 0

Answer:

0.30

Step-by-step explanation:

Each marker costs 30 cents each (0.30$)

you have to divide the amount of money (6) by the amount of markers (20)

6 ÷ 20= 0.30

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I need help with this question.
taurus [48]

Answer:

B ;))))))

Step-by-step explanation:

3 0
3 years ago
Word problem for 3(23)
Flauer [41]
This shows the multiplication between 3 and 23. So your word problem will have to show that. Jean buys three packs of gum. Each pack has 23 pieces. How many pieces of gum does Jean have in total? :)
7 0
4 years ago
Tania measured the growth of her plant each week. The firstt week, the plant's height measured 2.65 Decimeters. During the secon
Evgesh-ka [11]

Answer:

3.35 decimeter.

Step-by-step explanation:

We have been given that the first week, the plant's height measured 2.65 Decimeters. During the second week, Tania''s plant grew 0.7 Decimeter.

To find the height of Tania's plant at the end of second we will add 0.7 to 2.65.

\text{The length of Tania's plant at the end of 2nd week}=2.65+0.7

\text{The length of Tania's plant at the end of 2nd week}=3.35

Therefore, Tania's plant was 3.35 decimeter tall at the end of 2nd week


3 0
3 years ago
A company developing a new cellular phone plan intends to market their new phone to customers who use text and social media ofte
Ber [7]

Answer:

A customer who sends 78 messages per day would be at 99.38th percentile.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Average of 48 texts per day with a standard deviation of 12.

This means that \mu = 48, \sigma = 12

a. A customer who sends 78 messages per day would correspond to what percentile?

The percentile is the p-value of Z when X = 78. So

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

Z = \frac{78 - 48}{12}

Z = 2.5

Z = 2.5 has a p-value of 0.9938.

0.9938*100% = 99.38%.

A customer who sends 78 messages per day would be at 99.38th percentile.

8 0
3 years ago
Please help me with question 2 thank you !!
ipn [44]
A is the correct answer. Both diagonals would be the same length as it is a rectangle and when you substitute 7 for X in the equations, the answer is 26 for both.
6 0
3 years ago
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