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What causes the movement of calcium and sodium ions in and out of cardiac cells?
answered
Dec 9, 2018
Biology
high-school
5
votes
79.4k
views
In a study of 250 adults, the mean heart rate was 70 beats per minute. Assume the population of heart rates is known to be approximately normal with a standard deviation of 12 beats per minute. What is
answered
Oct 13, 2018
Mathematics
high-school
4
votes
123k
views
.(excerpt from) The Creation James Weldon Johnson AND God stepped out on space, And He looked around and said, “I’m lonely— I’ll make me a world.” And far as the eye of God could see5 Darkness covered
answered
May 13, 2018
English
college
6
votes
81.2k
views
What can you infer is Churchill's main reason for supporting the war?
answered
May 12, 2018
History
high-school
3
votes
6.4k
views
Fine the area of a circle with a radius of 7 in. Write the formula, substitute, solve.
answered
Nov 28, 2017
Mathematics
middle-school
3
votes
158k
views
Which two microscopes generate three-dimensional images? Answer is SEM and STM microscopes
answered
Mar 13, 2017
Biology
high-school
2
votes
13.0k
views
Nada spent $28 on 2 DVDs at this rate how much would 5 DVDs cost at what rate did she spend her money ?
answered
Jan 25, 2017
Mathematics
middle-school
5
votes
61.0k
views
Gaetano spent $37.80, including tax, on a pair of jeans cost if there was an 8% sales tax?
answered
Dec 4, 2016
Mathematics
middle-school
6
votes
156k
views
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