Assuming the function is
f(x) = x^4 + 3x^3-28x^2
Factorising, we get
f(x) = x^2(x+7)(x-4)
Therefore, there is a double root at x = 0 and singular roots at x = -7 and 4
double roots tend to bounce, kind of like the standard quadratic y = x^2
singular roots tend to cross, kind of like a straight line on a graph, y = mx + b
Therefore, it bounces at x = 0, and crosses at x = -7 and 4
In general, a root raised to an even power bounces, and a root raised to an odd power crosses.
56 + 90 = 146 kilometers
4 + 2 = 6 hours
rate = 146 km / 6 hour
= 24.333 km / hour
Answer:
An equation would be 39 divided by 10^3= 0.039
Step-by-step explanation:
Hope this helps!! ;-)
Answer:
angle A=68°
angle B=68°
angle D= 111°
Step-by-step explanation:
angle D = angle C
angle D = 111°
interior angle of a quadrilateral=360°
angles A and B are equal . represent them by a°
a°+a°+111°+111°=360°
2a°+222°=360°
2a°=360°-222°
2a°=138°
2a°/2=138°/2
a°=68°
therefore angle A=68° and angle B =68°