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What species may have been the first to use crude tools? Homo habilis Homo erectus Australopithecines Homo sapiens
asked
Jan 21, 2018
History
high-school
2
answers
4
votes
24.5k
views
How do mitosis and meiosis differ in the division of genetic composition? Mitosis produces two genetically different daughter cells but meiosis produces four genetically identical daughter cells. Mitosis
asked
Mar 8, 2017
Biology
high-school
2
answers
3
votes
63.9k
views
Bricklayers use the formula N = 7LH to estimate the number of bricks N needed to build a wall of height H and length L. What is the height of a wall that is 30 feet long and that requires 2,310 bricks
asked
Jan 28, 2017
Mathematics
high-school
1
answer
0
votes
74.4k
views
A count went from 605 to 203. What was the approximate percent decrease? Round the numbers to find an estimate of the percent decrease. The percent decrease was approximately 25%. The percent decrease
asked
Jan 25, 2017
Mathematics
middle-school
2
answers
1
vote
163k
views
Which expression has a value of 0? A. 4 – 4 ÷ 4 + 4 B. 4 – 4 ÷ 4 · 4 C. 4 · 4 – 4 ÷ 4 D. 4 ÷ 4 – 4 + 4
asked
Apr 12, 2016
Mathematics
middle-school
2
answers
3
votes
212k
views
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