Questions by John Petrak

Questions by John Petrak

Read the poem "City Trees" by Edna St. Vincent Millay. Abel The trees along this city street, Save for the traffic and the trains, Would make a sound as thin and sweet As trees in country lanes. And people

asked Apr 27, 2021

2 answers

0 votes

109k views

A sample of iron-59 contains 50mg. One hundred days later, the sample contains 10.75 mg. What is the half-life of iron-59, in days?

asked Apr 22, 2021

1 answer

1 vote

205k views

Which of these best describes a scientific variable

asked Sep 24, 2020

2 answers

3 votes

178k views

Please help me . Is the roped off area triangle ABC, a right triangle ?

asked Sep 11, 2020

2 answers

2 votes

127k views

What is an element in group 17 of the periodic table called?

asked Jun 28, 2020

1 answer

0 votes

22.1k views

For what value of x is the rational expression below equal to zero? x-9/(x-4) (x+4)

asked Mar 14, 2020

1 answer

5 votes

135k views

A car starts from rest and accelerates at 4 m/s^2 for 8 s, after which it continues at constant speed for 19 s. How far would it have traveled from its starting point by that time.

asked Feb 19, 2020

1 answer

5 votes

209k views

The index of refraction for Lucite is 2.25. What is the approximate speed of light in the Lucite?

asked May 27, 2019

1 answer

0 votes

210k views

What is the simplified form of each expression? 4(20 + 12) ÷ (4 - 3)

asked May 11, 2019

1 answer

3 votes

11.8k views

Find the equation of a line perpendicular to y-3x=-8 that passes through the point (3,2). Answer in slope-intercept form

asked Dec 9, 2018

2 answers

4 votes

219k views

Which of the following numbers will produce the same number when rounded to two significant figures? (2.3) 2.12 2.10 2.04 2.16

asked Apr 12, 2018

1 answer

0 votes

152k views

As a result of invasions, Afghanistan is a land with _____. A. similar Islamic beliefs B. few ethnic groups C. many ethnic groups D. a single language

asked Feb 19, 2018

2 answers

3 votes

51.1k views

Which principle says the separation of powers in the counstatuion?

asked Jan 14, 2018

1 answer

5 votes

133k views

Which of these states was not part of the middle colonies?

asked Apr 15, 2017

1 answer

2 votes

132k views

Who did Richard Nixon pick as his vice presidential candidate in 1968? Nelson Rockefeller Ronald Reagan George Romney Spiro Agnew

asked Apr 4, 2017

2 answers

2 votes

145k views

Find the mistake C2H4(g) + 2O2(g) → 2CO2(g) + 2H2(g)

asked Feb 4, 2015

1 answer

5 votes

114k views

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