We know that
applying the law of cosines
a² = b²+ c²<span> – 2*b*c*cos(A)
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in this problem
a=?
b=20
c=9
A=90°
so
a² = b²+ c² – 2*b*c*cos(A)
but
cos (A)=0
a² = b²+ c²-----> 20²+9²----> a²=400+81----> a²=481-----> a=√481
a=21.93-----> a=22
the answer is
22
Step-by-step explanation:
75.50 x 13
=151 is the anser for 10 people you need to figure out how much it costs per person to find your complete answer and don't forget get that your adding "Leo " into the eqation
I dont think that it belongs in primary consumers, secondary or third level consumers
