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iragen [17]
1 year ago
14

Pascal's Triangle

Mathematics
1 answer:
tiny-mole [99]1 year ago
4 0

Answer:

isk but i think u need to multiply

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John goes to a bookstore. he wants to buy at. most 25 books and spend at most $75. paperback books cost 1.75 and har cover books
Yanka [14]

Answer:

  • x + y ≤ 25
  • 1.75x + 2.50y ≤ 75

Step-by-step explanation:

  • Paperback books = x
  • Hard cover books = y

<u>Number of books:</u>

  • x + y ≤ 25

<u>Cost of books:</u>

  • 1.75x + 2.50y ≤ 75

The system above is the one we need

6 0
3 years ago
complete the concept map by naming the sampling that you have learned in this module then briefly discuss each
Dmitry [639]

In systematic sampling, individuals are selected at regular intervals from the sampling frame.

<h3>How to explain the sampling?</h3>

Stratified sampling- In this method, the population is first divided into subgroups (or strata) who all share a similar characteristic

<u>Clustered sampling.</u>- a clustered sample, subgroups of the population are used as the sampling unit, rather than individuals. The population is divided into subgroups, known as clusters, which are randomly selected to be included in the study

<u>Simple random sampling. </u>-In this case each individual is chosen entirely by chance and each member of the population has an equal chance, or probability, of being selected.

Quota sampling--This method of sampling is often used by market researchers. Interviewers are given a quota of subjects of a specified type to attempt to recruit.

Learn more about sampling on:

brainly.com/question/17831271

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6 0
2 years ago
You and your friend skate at the same rate.You complete 5 laps in 7 minutes.How long does your friend take to complete 15 laps?
gogolik [260]

Answer:

21minutes

Step-by-step explanation:

its 21 minutes because 5x3=15 so 7x3=21

6 0
2 years ago
Jack has 20 more stamps than Dylan has. Together they have 46 stamps. Find the number of stamps each has
Pachacha [2.7K]

Answer:

The number of Jack's stamps is 33 and Dylan's stamps is 13

Step-by-step explanation:

Let

x -----> the number of Jack's stamps

y -----> the number of Dylan's stamps

we know that

x+y=46 ----> equation A

x=y+20 -----> equation B

Solve by substitution

substitute equation B in equation A and solve for y

(y+20)+y=46

2y=46-20

2y=26

y=13 stamps

Fond the value of x

x=y+20 -----> x=13+20=33 stamps

therefore

The number of Jack's stamps is 33 and Dylan's stamps is 13

3 0
3 years ago
Read 2 more answers
Twenty motors were put on test under a high-temperature setting. The lifetimes in hours of the motors under these conditions are
natta225 [31]

Answer:

Step-by-step explanation:

The step by step explanation is given in the attached document.

3 0
3 years ago
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