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timurjin [86]
3 years ago
9

What is cos(3π)? 1 Ο -1 -2

Mathematics
1 answer:
vampirchik [111]3 years ago
8 0

Answer:

-1

Step-by-step explanation:

Edge 2020

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an 18 foot long ramp is placed at a loading dock that is 5feet above ground. how far is the bottom of the ramp from the dock?
goblinko [34]
17.29 feet, using the Pythagorean theorem.
5 0
3 years ago
Aaliyah wants to determine how age and gender are related to movie genre preference in her town. She selects a simple random sam
-Dominant- [34]

Answer:

The correct option is;

E. She will not be able to tell whether a difference in movie genre preference is related to a difference in age or to a difference in gender

Step-by-step explanation:

The question states that Aaliyah randomly selects the following;

First sample

Sample gender = Males

Sample size = 35

Age bracket of sample = 20 to 30 years

Second sample

Sample gender = Females

Sample size = 45

Age bracket of sample = 45 to 55 years

The plan is to determine how age and gender are related to movie genre preference

Appropriate sample distribution to determine movie genre preference is as follows;

Gender = Male

Age bracket = 20 to 55 years

Gender = Female

Age bracket = 20 to 55 years

Therefore, since the samples selected do not cut across the population of the by age and gender of movie genre preference, she will not be able to tell whether a difference in movie genre preference is related to a difference in age or to a difference in gender.

6 0
4 years ago
the mass of a grain of sand is about 10 to the power of negative three grams. about how many grains of sand are in the bag of sa
777dan777 [17]

We are given : The mass of a grain of sand = 10^{-3} grams.

Bag contains = 10 kilograms of sand.

Let us concert 10 kg into grams first.

1 kg = 1000 grams.

10 kg = 10 × 1000 = 10000 grams = 10^4.

Therefore, bag contains 10^4 grams of sand.

Therefore, number of grains of sand are in the bag of sand of 10^4 grams =

The mass of a grain of sand in grams ÷ The mass of a grain of sand.

\frac{10^4}{10^{-3}}

=10^{4-(-3)}

=10^{4+3}

=10^7  \ grains \ of \ sand.

Therefore, 10^7 grains of sand are in the bag of 10kg sand.

8 0
3 years ago
If i= radical -1 then i^2=
katovenus [111]

Answer:

-1

Step-by-step explanation:

i²=√-1*√-1=-1

6 0
3 years ago
HELP ASSAPPP WITH THIS QUESTION
NeTakaya
From 11 A.M. to 2 P.M. because that is when the line is constantly straight

7 0
3 years ago
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