200 books ; 75% decrease

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Answer 1
Answer:

the answer is 150 because you figure that 75 is 3/4 of 100. and 1/4 of 200 is 50. or you can do

.75*200=150


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A stack of paper contains 400 sheets. The volume of the stack is 140.25 cubic inches. Each sheet of paper is identical, with a length of 11 inches and a width of 8.5 inches. Find the height of each sheet of paper. Please put the process.

a researcher studied 30 people ages twenty to forty, 30 people ages forty-one to sixty, and 30 people ages sixty-one to eighty. the researcher set up two rooms—one with a faint rose smell, and one with a faint lemon smell. each participant was asked to enter each room and identify the smell in the room. what research method did the researcher use, and what outcome would be found?

Answers

If the researcher set up two rooms—one with a faint rose smell, and one with a faint lemon smell. each participant was asked to enter each room and identify the smell in the room. The research method that the researcher use , and what outcome would be found is: Cross-sectional. The outcome is: As people grow older their sense of smell decrease.

A cross-sectional is a research that is carried out by collecting data from different group of population or by drawing a random sample from a group of population  in which the researcher will then study or observe the data collected  at a particular period of time.

Based on the given information the researcher is making use of Cross-sectional research method as the researcher what to know how people perceive smell based on their age or how age determine people sense of smell.

The outcome that could be found based on the research is that as people age or grow older their sense of smell decrease or begins to decrease, which simply means that younger people have strongest sense of smell than older people.

Inconclusion If the researcher set up two rooms—one with a faint rose smell, and one with a faint lemon smell. each participant was asked to enter each room and identify the smell in the room. The research method that the researcher use , and what outcome would be found is: Cross-sectional. The outcome is: As people grow older their sense of smell decrease.

Learn more about Cross-sectional here:

brainly.com/question/1900606

Final answer:

The researcher used an experimental method with the type of smell as the independent variable and the identification of the smell as the dependent variable. The outcome would likely reveal differences in odor identification across age groups, with younger ones performing better due to age-related sensory changes.

Explanation:

The research method used in the scenario is known as an experimental method. This technique is adopted in studies where one or more variables are manipulated to analyze the effect on an outcome variable. Here, the independent variable being the type of smell (rose or lemon), and the dependent variable is the identification of the smell. In this experiment, different age groups function as the control variable.

The outcome of the experiment would ideally determine if there's a difference in odor identification across different age groups, and whether the type of scent (rose or lemon) impacts the ability to recognize the odor. Given the information related to sensory changes across different ages found particularly in the sense of smell, it can be postulated that the younger age groups might perform better in identifying the smells correctly. Studies have noted that sense of smell tends to decline after the age of 50.

Learn more about Experimental Research Method here:

brainly.com/question/34018180

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A scientist begins an experiment with a petri dish containing a culture of bacteria cells and records the cell growth every hour. At 1 hour, the bacteria had grown to 880 cells, and at 2 hours, had grown to 3,520 cells. Which function can be used to represent the relationship between the number of bacteria cells, y, and the time in hours, x?

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Answer: Hello!

we know that in the first hour, we had 880 cells, and in the second hour we have 3520 cells. The first step is see how much the population changed in this one hour, this can be done by looking into the quotient:

3520/880 = 4

then the population of cells cuatriplied in one hour, and is safe to asume that every hour that pases, the population will catriplied  again.

so if the populationat hour 1 is: 880

at hour 2 is: 4*880

at hour 3 is = 4*4*880 and so on.

This can be described with an exponential function as follows

P(t) = 880*4^(x-1)

where 880 is the initial population, and x is represents the hours.

These are the choices y = 4 x y = 220(4) x y = 880(4) x y = 880(0.25) x Right..?

1+4 =5 2+5=12 3+6=21 8+11=

Answers

1 + 4 = 5
2 + 5 + 5 = 12
3 + 6 + 12 = 21
8 + 11 + 21 = 40
So the missing number is 40 and that we can see from the above deduction. Actually the number that we get from the previous addition is added with the next addition to get the result. This is the link between the equations.
It would be 40 because it adds the sum of the equation before it

Help !! Geometry
I need to find the measure of each angle in the figure.

Answers

Answer:

m<b=55*

m<c=125*

m<a=125*

What are the domain and range of the function f(x) = 3^x + 5

Answers

Answer:

Hence,

Domain: (-∞,∞)

Range: (5,∞)

Step-by-step explanation:

The domain of the function is the possible set of values at which the function is defined.

and the range of the function is the corresponding function values at the points of the domain.

e are given a function f(x) as:

f(x)=3^x+5

Clearly the function 3^x is defined for all the real values.

Hence, the function:

f(x)=3^x+5 is defined for all the real numbers.

Hence the domain of the function is: (-∞,∞) i.e. all of the real line.

Also we know that:

3^x>0 for all x.

Hence,

3^x+5>5 for all x.

Hence, the range of the function is:

(5,∞).

Hence,

Domain: (-∞,∞)

Range: (5,∞)

The range is y values and domain is x values 

y intercept here is 5 and since the function is increasing thus the range would be all real values bigger than or equal to 5 

And the domain would be all real numbers. 

What is reference angle for 150 degrees

Answers

30 degrees because you want to find the angle between the 150 degrees and it's supplement- if it was 340 then it would be 20 degrees