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The library gives out 4 books in a list of 20 books as a gift. If no two books are the same, how many possible giveaways of 4 books are there?
answered
Oct 4, 2021
Mathematics
college
4
votes
177k
views
Need help with those
answered
Sep 9, 2021
History
middle-school
5
votes
178k
views
Which limitation of fuel cells is the most likely reason why people are concerned about using fuel cells in cars? Hydrogen gas is volatile. o Water contains a lot of hydrogen atoms. O Fuel cell cars cannot
answered
Sep 8, 2021
Chemistry
high-school
5
votes
143k
views
What is the solution to x -9 > -15
answered
May 9, 2021
Mathematics
high-school
3
votes
95.9k
views
Which instrument would be used to measure the mass of a small stone? I 1. graduated cylinder 2. Celsius thermometer 3. triple-beam balance 4. metric ruler
answered
Feb 26, 2021
Chemistry
high-school
5
votes
107k
views
Which Micro molecule is steroids
answered
Feb 19, 2021
Biology
high-school
1
vote
15.8k
views
What three parts make up the nervous system?
answered
Jan 20, 2021
Biology
high-school
4
votes
10.8k
views
You are not required to construct a hypothesis for the phase change lab report True False
answered
Nov 21, 2020
Biology
middle-school
4
votes
134k
views
Natalie is a 2-year-old child who struggles with constant fatigue. Her diet is limited in the amount of dark green vegetables available and consists mainly of rice and high-fat meats. Based on the information
answered
Oct 16, 2020
Social Studies
high-school
0
votes
210k
views
The school beautification committee bought crepe myrtles and azaleas to plant in front of the school. They bought 36 plants in all. Each azalea cost $5.00 and each crepe myrtle cost $8.00. They spent $228
answered
Jun 25, 2020
Mathematics
high-school
7
votes
200k
views
What is the correct pronoun for "they want the book."?
answered
Jun 13, 2020
Spanish
middle-school
5
votes
69.5k
views
The managers want to know how many boxes of 12 cookies can be filled with the 3,258 cookies that have been baked. Fatima starts by subtracting the largest number of boxes she can easily calculate. She
answered
May 1, 2020
Mathematics
college
4
votes
150k
views
Describe the process purpose and problem with gerrymandering
answered
Dec 24, 2019
Social Studies
high-school
4
votes
30.9k
views
What economic reforms did the people's party call for?
answered
Aug 13, 2019
History
high-school
5
votes
216k
views
Alfred made 21 goals in 3.5 minutes. What is Alfred’s unit rate?
answered
Jul 25, 2019
Mathematics
middle-school
4
votes
101k
views
The “mountain men” of the Oregon Territory were _____. a. ranchers b. fishermen c. trappers d. miners
answered
Jun 28, 2019
History
high-school
4
votes
98.3k
views
How do americans view the world
answered
May 29, 2019
History
high-school
3
votes
154k
views
World War I was also called because of the millions of casualties and the sheer brutal violence.
answered
Mar 23, 2019
Mathematics
college
5
votes
159k
views
What is the correct water depth for an echo travel time of 6 seconds? (for the purposes of this exercise, assume pressure and temperature effects on sound wave velocity are negligible.)?
answered
Nov 23, 2018
Physics
college
7
votes
70.0k
views
The addition of which solution will shift the equilibrium of the given equation? CaF2 (s) mc031-1.jpg Ca2+ (aq) + 2F– (aq) 1)0.1 M Ba(NO3)2 2)0.1 M MgCl2 3)0.1 M KC2H3O2 4)0.1 M NaF
answered
Sep 13, 2018
Chemistry
high-school
5
votes
228k
views
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