Answers by Bruce Van Der Kooij
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Answers by Bruce Van Der Kooij

Answers by Bruce Van Der Kooij
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Add. Simplify, if possible. Help please.
answered Aug 20, 2021
4 votes
77.0k views
The element copper (Cu) has two naturally occurring isotopes, 63Cu and 65Cu, with an average atomic mass of 63.55 u. Copper is 69.17% 63Cu, and the atomic mass of 63Cu is 62.9296 u. Calculate the mass
answered Jul 16, 2021
2 votes
192k views
Write the structure of the following compound: => 3-(4-chlorophenyl)-2-methylpropane
answered Apr 12, 2021
7 votes
23.5k views
Who was the 15 President
answered Feb 4, 2021
4 votes
78.1k views
Suppose that one person in 10,000 people has a rare genetic disease. There is an excellent test for the disease; 98.8% of the people with the disease test positive and only 0.4% of the people who don't
answered Aug 11, 2020
5 votes
199k views
brennan and ilene are solving the following problem. find x, y, and z in this 45-45-90 triangle if h = 4. which of them is correct?
answered Feb 9, 2020
4 votes
41.7k views
Which of the following help the United States become a super power after World War II
answered Dec 20, 2019
7 votes
10.5k views
The rectangular-shaped doctor's office has an area of 120 square feet and a perimeter of 44 feet. What are the dimensions of this office space?
answered Dec 6, 2019
1 vote
186k views
Reforms to law enforcement in the 1930s were intended to _____.
answered Sep 15, 2019
6 votes
214k views
Historically, what have been the most important roles of the minor parties? briefly explain one of these roles.
answered Aug 11, 2019
2 votes
64.3k views
A 1948 conference in Columbia brought together nations of the Western Hemisphere. This conference led to the formation of the North American Treaty Organization (NATO) Southeast American Treaty Organization
answered Aug 7, 2019
4 votes
197k views
Brooke earns $7 an hour at her job now. She can represent the total she makes in a week using the expression 7r. Brooke has asked for a $1 an hour raise. Which expressing would represent the amount Brooke
answered Jun 7, 2019
3 votes
231k views
Would government regulation or community agencies help reduce cad prevalence?
answered Nov 15, 2018
4 votes
205k views
Which describes the waste-exchange method of handling hazardous waste materials?
answered Oct 12, 2018
2 votes
105k views
Identify the function that was transformed from the quadratic parent function, f(x)=x^2, by reflecting it over the x-axis and translating it right 5 and down 7 units.
answered Sep 22, 2018
6 votes
60.6k views
A girl read a book that had 1,159 pages. She read 72 pages on the first day. She then read 40 pages per day until she finished the book. Which equation can be used to find the number of days, d, it took
answered May 7, 2018
4 votes
47.0k views
List five values that satisfy the equation. 1 ≤ -x ≤ 5
answered Feb 25, 2018
4 votes
120k views
Which describes the connection between opportunity cost and capital? A.Opportunity cost represents an increase in capital that was not expected. B.Opportunity cost represents capital that is spent, rather
answered Feb 24, 2018
2 votes
34.1k views
Solve for a. 21a + 17 + 15a = -48 A.) 65 B.) 65/36 C.) -65/36 D.) -65
answered Feb 21, 2018
1 vote
70.9k views
Nick is listening to his boss not just to hear her words, but also to understand what she really wants out of the project on which he is working. nick is listening to accurately understand her meaning,
answered Jan 24, 2018
3 votes
145k views
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