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mafiozo [28]
3 years ago
10

Nico wanted to determine the number of students in his school who buy school lunch.he walked around the cafeteria one lunch peri

od looking to see whether every fifth person in the cafeteria purchased lunch or brought their own.which method did he use to collect his data
Mathematics
1 answer:
pashok25 [27]3 years ago
4 0

Answer:

Observational study

Step-by-step explanation:

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1. Rich wants to buy a coat priced at x dollars. It is on sale for 20% off. He must
alexandr1967 [171]

Answer: x-0.20x+0.0725x

Step-by-step explanation:

Let x be the price. 20% (0.20) 7.25% (0.0725)

x-0.20x+0.0725x

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3 years ago
A $20 shirt was 30% off and you had a coupon for another 10% off. What is the new price?
laila [671]

Answer:

$12.60 is the new price!

Step-by-step explanation:

20 x 0.7 = 14

14 x 0.9 = 12.6

Hope this helped!

4 0
3 years ago
Read 2 more answers
3 connecting lines are shown. Line D F is horizontal. Line D E is about half the length of line D F. Line F E is about one-third
mars1129 [50]

The inequality that explains why the three segments cannot be used to construct a triangle is ED + EF < DF

<h3>Inequalities </h3>

From the question, we are to determine which of the given inequalities explains why the three segments cannot be used to construct a triangle

From the given information,

Line DE is about half the length of line DF

That is,

ED = 1/2 DF

Also,

Line FE is about one-third of the length of line DF

That is,

EF = 1/3 DF

Then, we can write that

ED + EF = 1/2DF + 1/3DF

ED + EF = 5/6 DF

Since,

5/6 DF < DF

Then,

ED + EF < DF

Hence, the inequality that explains why the three segments cannot be used to construct a triangle is ED + EF < DF

Learn more on Inequalities here: brainly.com/question/1447311

#SPJ1

5 0
2 years ago
What is the sum, difference, product, and quotient of 7/12
True [87]

Answer:

7 plus 12 equals 19.

7 minus 12 equals -5.

7 times 12 equals 84.

7 divided by 12 equals 0,583...

7 0
3 years ago
Read 2 more answers
How to simplify (1-p)(1+p+p^2+p^3+p^4+p^5+p^6)?
Jlenok [28]
Use FOIL
<span>(1-p)(1+p+p^2+p^3+p^4+p^5+p^6)
</span><span>1+p+p^2+p^3+p^4+p^5+p^6 -1p - p^2 - p^3 - p^4 - p^5 - p^6
</span><span>1 + p -1p <------------------Answer</span>

7 0
3 years ago
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