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Which set of expressions are not equivalent? 4x(x) + 3(2x) and 4x2 + 6x 5(3x) - 4(3x) and 3x 4(3a) - 2(4a) and 4a2 3(3a) + a(3a) and 3a2 + 9a
answered
Nov 25, 2019
Mathematics
high-school
5
votes
153k
views
Gould and Eldredge proposed this new theory called
answered
Nov 9, 2019
Biology
middle-school
6
votes
74.0k
views
the what is made up of elements such as climate, landforms, water, soil, vegetation, wildlife, and energy and mineral resources
answered
Sep 30, 2019
Social Studies
high-school
1
vote
214k
views
Wave impact and pressure cause _____. refraction tides deposition erosion
answered
May 27, 2019
Biology
college
2
votes
139k
views
Organisms with advantageous adaptations are more likely to survive and reproduce than organisms without the advantageous adaptations. This phenomenon is known as natural selection. In order for natural
answered
Apr 25, 2019
Biology
college
1
vote
221k
views
A conveyer belt moves a 40 kg box at a velocity of 2 m/s. What is the kinetic energy of the box while it is on the conveyor belt? 40 J 80 J 160 J 1,600 J
answered
Apr 16, 2019
Physics
high-school
5
votes
18.0k
views
Rita makes sidewalk chalk two days a week each of those days she spent one one fourth hour making the chalk how much times does rita spend making sidewalk chalk in 3 weeks
answered
Nov 23, 2018
Mathematics
high-school
3
votes
108
views
If a varies directly as b, and a = 28 when b = 7, find b when a = 5.
answered
Nov 19, 2018
Mathematics
high-school
3
votes
233k
views
How to simplify 105/7
answered
Sep 24, 2018
Mathematics
high-school
7
votes
89.7k
views
In an electron dot diagram, the symbol for an element is used to represent A. the nucleus. B. the nucleus and all electrons. C. the nucleus and valence electrons. D. the nucleus and all non-valence electrons.
answered
Apr 18, 2018
Physics
high-school
5
votes
78.2k
views
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