1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
navik [9.2K]
3 years ago
12

A researcher wants to examine the effect of caffeine on sleep. She splits participants into two groups. The first group drinks c

affeinated-coffee at 8pm and the second group drinks decaf-coffee at 8pm. The researcher records what time participants fall asleep. What is the independent variable
Mathematics
1 answer:
Oduvanchick [21]3 years ago
8 0

Answer:

Type of coffee

Step-by-step explanation:

First, that is, it is the independent variable.

It is the variable that does not depend on another value or other circumstance, it is the variable that generally would be the options to choose from and depending on what is chosen, different results are obtained.

In this case, the variable that has this behavior is the type of coffee that will be taken, whether it is caffeinated or decaffeinated coffee.

You might be interested in
Find what equals to x and what equals to y
Nuetrik [128]

Answer:

x=15√2  y=90 degrees.

Step-by-step explanation:

Thanks to the Pythagorean Theorem we know that with any right triangle, A^2+B^2=C^2. In this case we can use 15^2+15^2=sqrt of 450. The square root of 450 is 15 times the square root of 2. Thus x=15√2. Now we need to find y. All angles in a triangle add up to 180 so if we have 45+45+y=180 then y=90.

3 0
2 years ago
Abdul put gas in his car. He paid $18.32 for 8 gallons of gas. What is the unit price?
givi [52]

Answer:

<em>$2.29/gal</em>

Step-by-step explanation:

The unit price is in units of cost per volume, or dollars per gallon, so you divide the cost in dollars by the volume in gallons.

unit rate = ($18.32)/(8 gal) = $2.29/gal

7 0
3 years ago
HOW AM I SUPPOSED TO DO THIS IF YOU DONT KNOW HOW TO DO THIS DONT HELP AN GET ME SOMEONE THAT WILL someone help me
Romashka-Z-Leto [24]
Just take each number in the first table and divide it by the total then x by 100

Eg the first one 24/120 x 100 = 20%
6 0
3 years ago
Jeffery is parking cars just outside of a building. Some of the spots are occupied.
bogdanovich [222]
Where is the rest of the question??
3 0
3 years ago
The product of 2 more than 3 times a number and 6 less than 4 times the number (z)
Rom4ik [11]

Answer:

12z^{2} -10z -12

Step-by-step explanation:

Let the number be z

2 more than 3 times z ==> 3z + 2

6 less than 4 times z ==> 4z - 6

Product of the above two is
(3z + 2) (4z - 6) \\= (3z)(4z) + (3z)(-6) + (4z)(2) + (2)(-6)\\= 12z^{2} -18z + 8z - 12\\= 12z^{2} -10z -12

7 0
2 years ago
Other questions:
  • 40 POINTS!!!!!!!! The length of a rectangle is 7 millimeters longer than its width. The perimeter is more than 62 millimeters.
    11·1 answer
  • Find the solution set.
    15·1 answer
  • Two dice are rolled. Define the events as follows: A : sum of 7, B : doubles, C : sum of 8
    10·1 answer
  • The number of kilometers Tony travels in a canoe, d, varies directly with the amount of time spent in the canoe, t. When Tony ca
    11·1 answer
  • WILL GIVE BRAINLIEST!!!!
    7·2 answers
  • What is 5 3/4 subtracted by 5/8
    13·1 answer
  • Given the statement “If a line is horizontal, then it has slope equal to zero,” what is its contrapositive?
    6·1 answer
  • Marc mixes blue and yellow paint to make his favorite shade of green, which he'll use to paint his house. He has 14 cans of blue
    12·1 answer
  • g An urn contains 10 balls: 4 red and 6 blue. A second urn contains 16 red balls and an unknown number of blue balls. A single b
    10·1 answer
  • <img src="https://tex.z-dn.net/?f=%5Csf%202x%2B21%3D3" id="TexFormula1" title="\sf 2x+21=3" alt="\sf 2x+21=3" align="absmiddle"
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!