Answers by Derrick Zhang
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Answers by Derrick Zhang

Answers by Derrick Zhang
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Electromagnetic waves are classified into forms such as radio waves, microwaves, and infrared waves, based on the amount of energy they carry. Which property of an electromagnetic wave determines the level
answered Feb 18, 2019
1 vote
222k views
In which section of the number line is √5?
answered Feb 13, 2019
5 votes
65.6k views
Find f'(0.3) for f(x)= the integral from 0 to x of arccos(t)dt
answered Oct 20, 2018
4 votes
222k views
What belongs in the box marked with the question mark in the proof? Given: 3x - 4 = 2(x + 8), Prove: x = 20 1. 3x - 4 = 2(x + 8) | 1. ______________ 2. 3x - 4 = 2x + 16 | 2.______________ 3. 3x = 2x +
answered Sep 21, 2018
6 votes
12.2k views
In the short story “Rules of the Game” by Amy Tan, what motivates the narrator to excel at chess? the desire to gain “invisible strength” her mother’s desire to display trophies the goal of earning money
answered Sep 8, 2018
2 votes
161k views
Which phrase correctly completes this conversation? Manuel: Mi primo tuvo un accidente. Paramédico: ¿Qué pasó? Manuel: Se cayó de una escalera y ____________ la cabeza. se quemó está inconsciente está
answered Jul 17, 2018
3 votes
64.7k views
Which property is shown by 6 + 9 = 9 + 6?
answered Jul 16, 2018
6 votes
203k views
If the x-intercept of a line is -3 and the y-intercept of this line is 8, what is the slope of this line?
answered Jul 16, 2018
4 votes
78.2k views
The first european settlers to establish colonies in the united states consisted of
answered Jun 22, 2017
3 votes
229k views
Is a simple random sample (sometimes, always or never) valid?
answered Jul 2, 2016
1 vote
29.7k views
what do historians study when attempting to make connections between ancient civilizations and world cultures of today?
answered Feb 20, 2016
6 votes
169k views
What is a way to solve $30.50-$17.79
answered Nov 1, 2015
3 votes
32.2k views
What is the gcf of 54 and 90
answered Sep 29, 2015
3 votes
160k views
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