algebra
What is your question?
math
You gain $3 if you get a 6, and always pay $0.90. E[X] = (1/6)*3 - $0.90
math
Pythagorean Theorem: a^2 + b^2 = c^2 c is the hypotenuse
algebra
25% was marked off the original price of $88.
fraction x whole number
7/10*30 = 7/10*10*3 = 7*3 = 21
algebra
If |3n+5| = 7, then 3n+5 = 7 or 3n+5 = -7. There are two possibilities for n; find both.
Math
18 < 20-w 18-20 < 20-w-20 -2 < -w Flip the inequality sign when multiplying by -1. 2 > w
science
The boiling point and condensation point are identical.
Math
Yes
Math pre-algebra
3/1.65 = 5/x
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