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dusya [7]
3 years ago
12

Marco solves the equation 4sin(3x) + 0.25 ≤ 2sin(3x) − 0.3 by graphing y = 2sin(3x) and y = −0.55. he then locates the intervals

on which 2sin(3x) is less than or equal to −0.55. is marco's solution method valid? explain.
Mathematics
2 answers:
raketka [301]3 years ago
8 0
Help me with this please 
ch4aika [34]3 years ago
6 0

Answer:

yes, Marco's method is correct.

The given inequality can be rewritten using the properties of inequality.

You can subtract 2sin(3x) and 0.25 from both sides of the inequality.

Subtracting preserves the direction of the inequality, so 2sin(3x) would be less than or equal to –0.55.

Step-by-step explanation:


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Bumek [7]

Answer:

a) yes, as the number of seats (2352) is larger than the total audience (1912)

b) 440 empty seats

Step-by-step explanation:

a) total number of seats = number of rows x number of seats in each row

total number of seats = 49 x 48

total number of seats = 2352 seats

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total audience = 1912 people

b) empty seats = total number of seats - total audience

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empty seats = 440

8 0
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zloy xaker [14]
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You are at a coffee shop and notice that as the temperature of the room gets colder, more people order hot beverages. From this
mina [271]

Answer:

negative relationship.

Step-by-step explanation:

An experiment can be defined as an investigation which typically involves the process of manipulating an independent variable (the cause) in order to be able to determine or measure the dependent variable (the effect).

This ultimately implies that, an experiment can be used by scientists to show or demonstrate how a condition causes or gives rise to another i.e cause and effect, influence, behavior, etc in a sample.

Cause and effect can be defined as the relationship between two things or events in which an occurrence one (cause) leads to the occurrence of another (effect).

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In this scenario, you are at a coffee shop and notice that as the temperature of the room gets colder, more people order hot beverages. From this observation, you conclude that there is a negative relationship between the temperature and hot beverage sales at this coffee shop because for the temperature to get colder it would decrease and for the hot beverages to be hot, its temperature must be increased.

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Marta_Voda [28]

Answer:

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3 years ago
Need help with this problem, please. The sum of three numbers is -3. The last number is three times the first. The last number i
oee [108]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
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