Answer:
Step-by-step explanation:
y=ax²+bx+c
x=0,y=0,c=0
y=ax²+bx
2=9a+3b (×-5)
3=25a+5b(×3)
add
9-10=75a-45a+15b-15b
30a=-1
a=-1/(30)
2=9×(-1/30)+3b
3b=2+3/10=23/10
b=23/30
y=-1/30 x²+23/30=-1/30(x²+23x+(23/2)²)+1/30 ×(529/4)
y=-1/30(x+23/2)²+529/120
Answer:
so 5 miles upstream and 15 miles downstream
Step-by-step explanation:
25/5=5
30/2=15
Answer:
0.78 Watts is correct answer.
Step-by-step explanation:
Formula:
P=V*I
=12*(6.5*10^-2)
= 12*0.065
=0.78 Watt.
Answer:
The second term in the sequence is -9
Step-by-step explanation:
Given the nth term of a sequence to be a(n) = a(n-1)+4 where n is the number of terms of the sequence
If a(1) = -13... (1)
The second term of the sequence is generated for n= 2:
a(2) = a(2-1)+4
a(2) = a(1)+4... (2)
Substituting equation 1 into 2
a(2) = -13+4
a(2) = -9
The second term in the sequence is -8