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what happened around 2.5 billion years ago that lead to a tremendous increase in the amount of oxygen in earths atmosphere?
answered
Dec 29, 2023
Biology
high-school
5
votes
195k
views
Explain the solubility of ionic compounds and covalent compounds in water.
answered
Aug 11, 2023
Chemistry
college
1
vote
200k
views
Which shape will result from taking a cross section of the tetrahedron through the points shown? triangle square trapezoid pentagon
answered
Jul 9, 2023
Mathematics
high-school
8
votes
175k
views
Which of the following is true? ( not multiple choice)
answered
Jun 11, 2023
Mathematics
high-school
5
votes
70.1k
views
Read the last lines of “Brother, Can You Spare a Dime?” What do these lines suggest about the social consequences of the Great Depression?
answered
Feb 20, 2023
Advanced Placement (AP)
college
12
votes
64.5k
views
For each equation, determine if y is a function of x. x+y=25
answered
Dec 26, 2022
Mathematics
college
1
vote
11.3k
views
PLEASE ANSWER ASAP Read the entry on Jonas Salk from Compton's Encyclopedia/The Britannica School Edition, and answer the question beneath the text. Compton's Encyclopedia Jonas Salk (1914-1995). For the
answered
Oct 24, 2022
English
middle-school
6
votes
93.8k
views
Find the square root of the following by long division method (a) 1369 (b) 5625
answered
Sep 4, 2022
Mathematics
high-school
4
votes
50.7k
views
What is the slope of the line on the graph? Enter your answer in the box.
answered
Aug 26, 2022
Mathematics
college
2
votes
49.0k
views
What is the value of k in the following equation? 2(4k + 5) + 3(3 – 3k) = 25
answered
Aug 16, 2022
Mathematics
college
5
votes
58.9k
views
I ___________ reading this book by next weekend. A. will have finished B. will be finishing C. would finish D. have finished
answered
Aug 12, 2022
English
college
3
votes
16.4k
views
.Name the religious leader who recently became the first person in his position to visit the Middle Eastern nation of Iraq.
answered
Jan 7, 2022
Social Studies
high-school
5
votes
24.7k
views
The area of a circle is 81π m². What is the circumference, in meters? Express your answer in terms of π.
answered
Dec 17, 2021
Mathematics
high-school
5
votes
221k
views
Devin works out 3 times a week. If he works out 3 times every week, how many times will he work out in 9 weeks?
answered
Nov 30, 2021
Mathematics
college
7
votes
32.9k
views
Joanna wants to buy a $35 pair of jeans and as many $20 sweaters as her budget will allow. Her bill cannot be more than $200. Which inequality could Joanna use to calculate how many sweaters (s) she will
answered
Nov 15, 2021
Mathematics
middle-school
0
votes
119k
views
Find the measure of the larger angle.
answered
Nov 12, 2021
Mathematics
middle-school
4
votes
159k
views
Two forces of 20 N and 10 N are making an angle of 120 degree with eachother. find a single pull that would (a) replace the given forces system (b) balance the given forces system.
answered
Oct 8, 2021
Physics
high-school
4
votes
70.3k
views
One-third cup of black beans provides 20% of the potassium you need daily. You must get the remaining 1,360 milligrams from other sources. How many milligrams of potassium should you consume daily? ___
answered
Aug 26, 2021
Mathematics
high-school
7
votes
8.2k
views
The Six Dynasties period in China is part of which continent?
answered
Jul 12, 2021
History
high-school
5
votes
33.6k
views
If 3b+2-6b=32+5b-2b, find b
answered
Jun 20, 2021
Mathematics
middle-school
3
votes
235k
views
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