Determine if the given value is a solution to the equation.- 
x = - 
- 
; 
A. Yes
B. No
Answer: A
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Solve the problem.A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 470 seconds and a standard deviation of 50 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 355 seconds.
A. 0.0107 B. 0.5107 C. 0.4893 D. 0.9893
Solve the problem.Select an appropriate graph of a twice-differentiable function y = f(x) that passes through the points src="https://sciemce.com/media/4/ppg__tttt0612191139__f1q8g6.jpg" style="vertical-align: -20.0px;" />
, 
, (0,0), 
and (
,1), and whose first two derivatives have the following sign patterns.y' : 
y" :
A. 
B. 
C. 
D. 
Solve the system of equations by determinants.6x + 6y = -125x + y = -22
A. x = -5, y = 3 B. x = 3, y = -5 C. x = 5, y = -3 D. x = -3, y = -5
Factor out the GCF from the polynomial.y5 + y3
A. y(y4 + y2) B. y3(y2 + y) C. y3(y2 + 1) D. y5 (y + 1)