One inlet pipe can fill a chemical storage tank in 30 hours. Another inlet pipe can fill the same tank in 80 hours. How long will it take to fill the storage tank if the two pipes work together?
What will be an ideal response?
21.8 hours
Mathematics
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Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.
+ 
+ 
+ ... + 
+ ...
A. 
; 6
B. 
; 6
C. 
; 6
D. 
; 6
Mathematics
Use substitution to factor the polynomial.15x4 + 26x2 + 8
A. (5x2 - 2)(3x2 - 4) B. (15x2 + 4)(x2 + 2) C. (3x2 + 4)(5x2 + 2) D. (3x2 + 1)(5x2 + 8)
Mathematics
Factor completely. If the polynomial is prime, so state.9x2 - 18xt + 8t2
A. (3x + 2t)(3x + 4t) B. (3x - 2t)(3x - 4t) C. (9x - 2t)(x - 4t) D. (9x + 2t)(x + 4t)
Mathematics
Find the x- and y-intercepts of f.f(x) = 2x3(x - 5)5
A. x-intercepts: 0, -5; y-intercept: 2 B. x-intercepts: 0, -5; y-intercept: 0 C. x-intercepts: 0, 5; y-intercept: 2 D. x-intercepts: 0, 5; y-intercept: 0
Mathematics