The half-life of Radium-226 is 1590 years. If a sample ... - Socratic
2016年6月20日 · The half-life of Radium-226 is 1590 years. If a sample contains 100 mg, how many mg will remain after 4000 years?
How do you solve 3x ^(2/3) + x^(1/3) - 2 = 0? - Socratic
2016年3月23日 · Algebra Quadratic Equations and Functions Comparing Methods for Solving Quadratics
How do you simplify sin x + cot x cos x? - Socratic
2016年1月26日 · Leland Adriano Alejandro Jan 26, 2016 #csc x# Explanation: We start from the given. #sin x+cotx cos x# #sin x+(cos x/sin x)*cos x# #sin x*(sin x/sin x)+(cos x cos x)/sin x# because #sin x/sin x=1#, we can always use it in any part of the equation or expression. fractions having the same denominator can be combined. ...
The length of a rectangle is 3 times its width. If the ... - Socratic
2016年2月9日 · Leland Adriano Alejandro Feb 9, 2016 #L=18# inches. Explanation: Perimeter #P=48# #L=3w# #P=2*L+2*w# #48=2(3w)+2w# #48=6w+2w# #48=8w# #w=48/8# #w=6# solve now length #L# #L=3w=3*6=18# #L=18# have a nice day from the Philippines! Answer link. Related questions.
A student test scores are 87, 95, 76, and 88. He wants an ... - Socratic
2016年5月13日 · A student test scores are 87, 95, 76, and 88. He wants an average of 85 or better overall. What is the minimum score he must get on the last test in order to achieve that average?
How do you solve A = (1/2)h(b_1 + b_2)" for "b_2? - Socratic
2016年6月7日 · How do you determine the amount of liquid a paper cone can hold with a 1.5-inch diameter and a...
How do you solve #cos(t)= -sqrt(3)/2# over the interval 0 to 2pi?
2016年2月20日 · t=(5pi)/6=150^@ and also t=(7pi)/6=210^@ in the interval 0 to 2pi, cos t is negative at the 2nd and 3rd quadrants the reference angle is the special angle 30^@ the angle 150^@ has a cosine of -sqrt3/2 also the angle 210^@ has a cosing of -sqrt3/2 have a nice day!
How do you convert 0.26 (6 repeating) to a fraction? - Socratic
2016年2月28日 · Let #a/b# the unknown fraction. then #a/b=0.266666666....# call this the 1st equation. Multiply both sides of the equation by 10 to produce #10a/b=2.66666666.....# call this the 2nd equation Go back to the 1st equation and this time multiply both sides by 100 to obtain
What is the domain and range of #y=ln(x)#? - Socratic
2016年2月8日 · Domain: x>0 Range: -oo<x<oo The graph of y=ln x x can only be all positive and y can take positive or negative values graph{y=ln x[-10, 10, -5,5]} Have a nice day from the Philippines!